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The Trailhead

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The Trailhead isn't your typical trail running podcast—we're not dissecting splits or debating race strategies. Instead, hosts Zoë Rom and Brendan Leonard take you straight to the heart (and funny bone) of the sport, celebrating the people, stories, and quirks that make trail running so special. With a mix of humor, heart, and a little irreverence, we explore the personalities, people, artists, and everyday athletes who give the sport its soul—because trail running is about more than just the miles.

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Tuesday · 53 min
The Freedom of Being a Beginner with Oladimeji "Dim" Ajegbile
Oladimeji Ajegbile, known online as Hello Dim, went viral for filming bike rides through Edinburgh with his two-year-old son perched on the handlebars, narrating every tree and bus he sees. He's also a former architect, UX designer, startup founder, stay-at-home dad, and, as of last year, a runner who clocked a sub-50 10K on roughly two training runs and just finished his first half marathon with a 50K trail ultra on the calendar. Zoë and Brendan talk with Dim about why the toddler videos connected when a decade of content didn't, the 90-day rule he uses to test every new pursuit, what the Piston Cup in Cars taught him about chasing medals, learning to ride a bike at 21, running the Union Canal in the pitch-black Scottish dark, getting dizzy at 30K of a track ultra, and his Substack essay on why achievement won't fix your emptiness. It's a conversation about being a beginner on purpose, making things for the process instead of the result, and what happens when the internet decides which part of your life it wants to see.
September 1 · 55 min
Margaret Glaspy on Pain Caves, Typewriters, and Running on Tour
Singer-songwriter Margaret Glaspy joins Zoë and Brendan to talk about the strange and surprisingly rich overlap between running and making art. She shares how watching her mom run planted the seed early, growing up close to the Western States course, how Courtney Dauwalter and Addie Bracy helped draw her into ultrarunning, and why learning to sit with discomfort has changed far more than her athletic life. Margaret also talks about quitting social media, writing songs on a typewriter, finding solitude in anonymous hotel gyms, and the logistical challenge of training while touring in a van. Plus: the financial risks of falling on your guitar-playing hand, the unexpectedly deep musician-to-ultrarunner pipeline, and what Margaret might learn from how ICU nurses train for ultras.
August 18 · 1 hr 10 min
Doing It The Hard Way is the Point - With Writer Sam Robinson
Sam Robinson writes the Substack Footnotes, works as a content designer at YouTube, and has a PhD in seventeenth-century science, religion, and philosophy, which makes him exactly the right person to ask why we're all trying so hard to optimize a sport whose whole appeal is that it's beautifully pointless. Zoë and Brendan get into the tension with him: distance running rewards incremental gains and deferred gratification, and it's also the least efficient way imaginable to get from point A back to point A. Sam talks about racing above Stinson Beach with his head down, missing the view; about eating a protein bar in the shower at 4:58 a.m. to make a 7:30 meeting; and about how a three-year-old and a torn meniscus have both forced a slower relationship with the sport. The back half turns to Sam's piece on the fragility of type two fun and the male friendship crisis, what happens to shoulder-to-shoulder friendships when the run club scatters and the knee gives out, and whether shared mileage alone can hold a community together. Along the way: Robert Caro, Oliver Burkeman, Benjamin Franklin prosecuting his breakfast, and the unsettling possibility that morning-routine influencers have never actually seen American Psycho. Read Sam at footnotes.substack.com. This episode is brought to you by Running Warehouse - join our club here.
August 4 · 57 min
What If the Hero's Journey Is the Wrong Story? With Heather Hansman
Heather Hansman is an award-winning outdoor journalist, an Outside columnist, and the author of Downriver and the bestselling Powder Days. Her new book, Fierce Country: The Untold Story of Three Women Who Ignited America's Love for the Wild, is out now. In this conversation: the therapist who mapped the heroine's journey, and the very famous mythologist who told her women don't need one; Georgie White swimming Grand Canyon rapids in 1945 in tennis shoes and a couple of hard candies; why there always seems to be exactly one available spot at the top for a woman, and what that has to do with the way we talked about Rachel Entrekin winning Cocodona outright; topophilia, or what happens when the love of your life turns out to be a landscape; and whether the American myth of the lone tough guy summiting the mountain is, frankly, a pretty boring story. This episode is brought to you by LMNT. Go to drinklmnt.com/UltraSignup for a free sample pack with any order. Featured race: the Bear Canyon Trail Run in Sandy, Utah, on Saturday, October 10. Formerly the Corner Canyon Ultra, now with a new name and a new course. The 11 Mile Classic climbs over 4,000 feet in five miles, the 20 Mile Challenge runs that loop twice, and there's a 5K if you'd like to keep your quads. Every dollar raised goes to an individual or family facing serious hardship, nearly $70,000 to 13 recipients since 2013. Registration closes Wednesday, October 7. Sign up at UltraSignup.com. The Trailhead is part of the UltraSignup Podcast Network.
July 21 · 59 min
Is Running a Religion? A 1,400-Mile Pilgrimage Around Ireland with Author Adharanand Finn
Adharanand Finn is an award-winning journalist and the author of Running with the Kenyans, The Way of the Runner, and The Rise of the Ultra Runners, and his forthcoming book The Running Pilgrim chronicles the 1,400 miles he ran around Ireland in 68 days. In this conversation, Zoe and Brendan talk with Adharanand about what Kenyan, Japanese, and ultrarunning cultures taught him about community and staying in the moment, why a pilgrimage is basically an ultra with better theology, the science of why running with other people feels easier, ultrarunning's weird romance with suffering, and the definitive (and expanding) playlist of songs about running. This episode is brought to you by Running Warehouse, where you can find everything you need to survive summer running, from vests to socks to a frankly irresponsible number of gels. Shop through the link in our show notes. Featured race: The Oregon Outback 230 is a 230-mile point-to-point journey from the eastern Cascades to Lakeview, Oregon, through the largest dark sky sanctuary in the world, happening July 16 through 21, 2027, with a 120-hour cutoff. Registration closes July 1, 2027. Sign up at UltraSignup.com. The Trailhead is part of the UltraSignup Podcast Network.
July 7 · 1 hr 2 min
Race Photographer Anastasia Wilde on What 200-Milers Really Look Like
Anastasia Wilde is a Missoula-based adventure photographer who has spent the last five years shooting the country's biggest 200-mile races like Bigfoot, Tahoe, Cocodona, and hiking up to eight miles into the backcountry with thirty pounds of gear to photograph runners at their most unfiltered. In this conversation, Anastasia tells us how a Costco camera kit and a suspiciously well-timed $500 raffle win turned a middle school music teacher into one of ultrarunning's most prolific race photographers, why the mid- and back-of-pack will tell a stranger with a camera things they haven't told their families, the memory card catastrophe at the Bigfoot finish line she still thinks about, whether AI will ever make any of us look good while running (no), and what it means to photograph someone crying alone at sunrise on their way to a five-year buckle. This episode is brought to you by LMNT and their new lemonade iced tea flavor. Get a free sample pack with any order at drinklmnt.com/UltraSignup. This week's featured race is the Machete Muertos 200 at Lake Perris, California, starting Wednesday, October 28. 200 miles, 44,000 feet of climbing, and a 96-hour cutoff at one of the toughest 200-milers in the country, part of Machete Madness's Día de los Muertos celebration. There's also a 100-miler, a 50-miler, and 10- and 20-mile ruck divisions, with free family camping, free professional photos, and no pacer fees. Registration closes Friday, October 16. Sign up at UltraSignup.com. The Trailhead is part of the UltraSignup Podcast Network.
June 23 · 1 hr 5 min
Geologist and Pro Athlete Dillon Osleger on the Hidden History Written Into Every Trail
Dillon Osleger is a geologist, professional mountain biker, and longtime trail steward whose debut book, Trail Work: Restoring the Paths and Stories of America's Public Lands, uncovers the buried history beneath the trails we run, ride, and take for granted. In this conversation, Zoe and Brendan get into why nobody wants to do the unglamorous work of maintenance (and the Kurt Vonnegut line that nails it) and how to read a trail like a layered history book. Dillon decodes what is hiding in plain sight, from barbed wire patents that date a fence to within two years, to the segregated CCC camps you can spot in the stonework, to the Indigenous place names that outlast every map. Along the way: what is quietly erasing two-thirds of America's historic trails, an extremely unhinged riff on trailmaxing as the next men's wellness trend, and a genuinely useful answer to the question most of us are too sheepish to ask, which is how do you actually start doing trail work. This episode is brought to you by Running Warehouse, your one-stop shop for trail shoes, vests, poles, and the anti-chafe stuff you forget until mile 40. Join the UltraSignup Club. The Trailhead is part of the UltraSignup Podcast Network.
June 9 · 1 hr 5 min
How to Spot Fitness and Wellness BS with Exercise Scientist Nick Tiller, PhD
Dr. Nick Tiller is an exercise scientist at the Lundquist Institute at Harbor-UCLA, a two-decade ultrarunner, and the author of The Skeptic's Guide to Sports Science and the new The Health and Wellness Lie. In this conversation: why ultrarunning is, by Nick's cheerful admission, not actually good for you, and why we keep signing up anyway; the red flags that should trip your bullshit detector in 2026; the great protein panic and how a "health halo" turns a Pop-Tart into a recovery food; what the evidence does and very much doesn't say about AG1; KT tape, cupping, and the slippery ethics of selling someone a placebo; and how to stay skeptical without curdling into a cynic whose brain has fallen out. This episode is brought to you by LMNT, the new Lemonade Iced Tea flavor has been quietly fixing our hydration and our 4pm coffee regrets; grab a free sample pack with any order at drinklmnt.com/UltraSignup. Featured race: the Ode to Laz Michigan Backyard Ultra, a 4.167-mile loop run every hour on the hour through 8,000 acres of Holly State Recreation Area in Holly, Michigan, on Saturday, July 18. The only way to win is to be the last runner standing, which is why the motto is "finishing last means the most." If you're backyard-curious but not ready to sign over your soul, the Oak Flats 3-hour option lets you dip in for one, two, or three loops. It's a championship-affiliated race, so the winner takes a silver ticket toward the USA national backyard team. Registration closes Thursday, July 16. Sign up at UltraSignup.com. The Trailhead is part of the UltraSignup Podcast Network.
May 26 · 46 min
A Longtime New York Times Music Critic on How Running Changed the Way He Listens
Ben Ratliff is a former New York Times music critic, a writing professor at NYU, and the author of Run the Song: Writing About Running About Listening, longlisted for the National Book Award and named a finalist for the PEN/Diamonstein-Spielvogel Award for the Art of the Essay, which chronicles what he hears when he brings music into his near-daily runs through the Bronx. In this conversation, Zoë and Brendan talk with Ratliff about why running made him a better listener, and why the optimal-BPM running playlist is, by his lights, beside the point. He makes the case for listening as active attention rather than ambient wallpaper, explains why some of the slowest and quietest music turns out to be the most enlivening to run to, and pushes back on the idea that "good taste" is something you can buy. Along the way: defamiliarizing a song until it sounds brand new, the strange kinship between a long run and a long DJ set, and how a career critic ends up running to everything from jazz to Ice Spice. This episode is brought to you by Running Warehouse, where Zoë gets basically all her summer running gear, vests, socks, hats, shirts, and a frankly irresponsible number of gels, with fast shipping and a return policy run by actual humans. This week's featured race is the FCA Endurance Race in Oakwood, Georgia — a choose-your-own-adventure event on a flat, one-mile paved loop around the University of North Georgia's Oakwood campus. Pick your distance: a 5K, a 10K that detours onto dirt and a stretch of cross-country trail, or a timed race of two, four, six, twelve, or twenty-four hours, with some durations offering a 6 p.m. start so you can run straight into the night. It all happens Saturday, June 6, 2026, and registration stays open right through race day. Sign up at UltraSignup.com. The Trailhead is part of the UltraSignup Podcast Network.
May 12 · 1 hr 2 min
Social Psychologist Emily Balcetis on Why the Wall Is Mental, Not Physical
When you hit the wall at mile 19 of a marathon (or mile 80 of a 100-miler) it feels like your body is the problem. Your legs are concrete, your stomach is in revolt, and the finish line might as well be on the moon. But what if the wall is mostly in your head? Emily Balcetis is a social psychologist who studies how vision and perception shape motivation: how what people literally see changes what they believe they can do. She runs the SPAM Lab at NYU and is the author of Clearer, Closer, Better: How Successful People See the World. Her TED Talk on why some people find exercise harder than others has been viewed over a million times. Zoe and Brendan get into why highly motivated runners literally see the finish line as closer than it is, how Joan Benoit Samuelson used a woman in pink shorts to win the first Olympic women's marathon in 1984, and why the wall is a psychological phenomenon rather than a physiological one. Emily explains why willpower isn't a fixed trait you either have or don't, the if-then framework she calls foreshadowing failure, and how negativity bias means our brains lie to us about our own progress, which is why becoming your own accountant might be more useful than another motivational Post-it on the bathroom mirror. Plus: how Emily decided to learn the drums in a one-bedroom Manhattan apartment, and what it taught her about tracking the kind of progress the brain can't see. This episode is brought to you by LMNT. Try the new 12oz Sparkling at drinkLMNT.com/UltraSignup and grab a free sample pack with any order. The featured race is the Haul Ass Ultra Running Festival, Saturday, June 6th, in Erie, Colorado. Eight distances on the menu: a 50-miler, 50K, 10K, 5K, and 3, 6, 9, and 12-hour timed events, which means whatever shape you're in and whoever you're bringing along, there's a way to make it work. Sign up at UltraSignup.com. The Trailhead is part of the UltraSignup Podcast Network.
April 28 · 55 min
Why Your Brain Needs You to Run with Evolutionary Biologist David Raichlen
David Raichlen is a professor of biological sciences at the University of Southern California whose research examines how human evolution, physical activity, and brain health are linked across the lifespan. In this conversation, Zoë and Brendan talk with David about what's actually happening in your brain when you go from couch to consistently active, why exercise might be the closest thing we have to a dementia preventative, and why his research on the runner's high, which famously involved humans, dogs, and ferrets, suggests it evolved as something more useful than feeling good. They also get into what hunter-gatherers like the Hadza can (and can't) tell us about how to live, why "more is better" hits diminishing returns at the high end, the trouble with paleo prescriptions, and whether sitting really is the new smoking. Plus: Brendan tries to figure out if his rock-climbing mom or his golfing dad is doing better cognitive work than he is. This episode is brought to you by Running Warehouse, the one-stop shop for all things trail running, with gear guides and expert resources to help you figure out what actually works for you. Use code TRAILHEAD for free two-day shipping on orders over $50. Our featured race is the Sonoma Fall Classic, the inaugural fall festival in the heart of California wine country featuring a 100-miler, the original Lake Sonoma 50 returning to its 2008 point-to-point roots from South Lake Trailhead, a trail marathon, and four-person relays. Sixteen miles of buttery single track, sweeping lake views, swimmable water crossings, and free on-site camping. Registration closes Monday, October 12. Sign up at UltraSignup.com. The Trailhead is part of the UltraSignup Podcast Network.
April 14 · 1 hr 1 min
Rochelle Bilow on Food, Running, and Romance Novels
Rochelle Bilow is a romance novelist, food writer, French Culinary Institute graduate, former Bon Appétit editor, and current kitchen gear expert at Serious Eats, and she just came back to ultrarunning after nearly a decade away from the sport. In this conversation, Zoë and Brendan talk with Rochelle about what she learned cooking on a farm that culinary school never taught her, why she pivoted from heartbreak memoir to romance fiction, and what it's like to balance writing deadlines with ultra training (her answer: ask for a deadline extension). They dig into why romance as a genre gets unfairly dismissed, what makes a great enemies-to-lovers arc, and the trail running romance novel she's currently writing. Plus: the $400 toaster that changed Rochelle's life, the truth about toaster oven air fryers, and the only correct way to clean a cloudy Vitamix. This episode is brought to you by LMNT. Stay on top of your electrolytes all day, not just on the run. Grab a free sample pack with any order at drinklmnt.com/UltraSignup. Featured Race: Booneville Backroads Ultra — 10K to 100 miles through the Bridges of Madison County countryside in rural Iowa. New for 2026: a fully marked course and crew support allowed. Trail Sisters members can DM the race for a discount code. Race day is September 5th, registration closes August 28th. Sign up at UltraSignup.com. The Trailhead is part of the UltraSignup Podcast Network.
March 31 · 54 min
From Cattle Ranching to 100 Mile Races with "Beef Runner" Ryan Goodman
Ryan Goodman grew up on a cattle ranch in Arkansas, studied beef cattle science at Oklahoma State University, and now manages WSU's beef cattle research program as Beef Cattle Operations Manager in Pullman, Washington, where he also teaches hands-on lab courses to the next generation of pre-veterinary students. Online, he goes by @BeefRunner. He also runs a lot of 100-mile races. In this conversation, Zoë and Brendan talk with Ryan about what six weeks of calving season: sleepless, high-stakes, completely indifferent to your training plan, taught him about finishing a hundred-miler, and why "one thing at a time" works as well in the Crazy Mountains of Montana as it does on a ranch at 2 a.m. They get into the complicated but more negotiable than you'd think relationship between ranchers and trail runners, the farm-versus-ranch distinction (I-35 is the line, roughly), why the heifers following you on BLM trail are curious not threatening, and Red Dirt music as the ultrarunning soundtrack you didn't know you needed. Also: cow tipping, the correct post-ultra meal, and whether Pullman counts as a town. This week's featured race is Mujeres and Marigolds, a women's only event with a 5k, 10k, 25k, 50k, and 100k relay! Thanks to TrailCon for supporting the podcast. Register now to attend!
March 17 · 1 hr
Philosopher C. Thi Nguyen on Why Ultrarunning Is a Game, and Maybe the Meaning of Life
C. Thi Nguyen is a philosopher at the University of Utah, a former food writer for the Los Angeles Times, a rock climber, and one of the world's leading thinkers on the philosophy of games. His new book, The Score: How to Stop Playing Somebody Else's Game, argues that games are the defining art form of our era, and that the scoring systems that make them so joyful turn quietly destructive when institutions and apps wield them instead. In this conversation, Zoë and Brendan talk with CT about why ultrarunning is a game in the deepest philosophical sense, his concept of value capture and why it explains your relationship with Strava better than you'd like, what carbon plates and trekking poles reveal about game design, and why Bernard Suits, the philosopher who defined play as "voluntarily taking on unnecessary obstacles", thought games might literally be the meaning of life. Also: fly fishing pickup artists, the shot clock, elite yo-yoing, and Zoë's Smash Mouth Strava segment situation. This episode is brought to you by Running Warehouse, the best place to find shoes, kit, and gear from top brands, with honest reviews and filters that actually help. Our featured race is the Baker Trail Ultra Challenge, a 50-mile point-to-point through the Cook Forest stretches of the North Country Trail in Western Pennsylvania with 6,200 feet of climbing and a three-part commemorative medal — complete all three sections and you get the full set. Registration closes August 28. Sign up at UltraSignup.com. The Trailhead is part of the UltraSignup Podcast Network.
March 3 · 55 min
What Running 150 Miles Across Iceland Taught Pavel Cenkl About the Planet
Pavel Cenkl is a climate writer, ultrarunner, and Dean of Academics at Prescott College who has run hundreds of miles across Iceland, Scandinavia, and the Arctic through his project Climate Run. He grew up in the White Mountains, worked the AMC huts, started one of the first collegiate trail running teams in the U.S., and built a master's program combining movement, environmental philosophy, and ecology. In this conversation, Zoë and Brendan talk with Pavel about what happens when you push yourself to the edge of exhaustion in landscapes that are literally shifting beneath your feet — disappearing glaciers, the vulnerability of being utterly alone in midnight sun, why "resilience over resistance" is a better framework for running and life, and the moment he screamed so loud on day three of his Iceland crossing that he scared a goose into flight and accidentally had a paradigm shift. This episode is brought to you by Precision Fuel and Hydration, use code TRAILHEAD26 for 15% off at PrecisionHydration.com. Our featured race is the White Lake Ultras on May 2nd in Tamworth, New Hampshire, a two-mile lakefront loop where you pick your poison: 6, 12, or 24 hours. Costumes encouraged. Register at UltraSignup.com. The Trailhead is part of the UltraSignup Podcast Network.
February 17 · 57 min
Science Journalist Christie Aschwanden on What Actually Works for Recovery (And What Doesn't)
Christie Aschwanden is a New York Times bestselling author, former lead science writer at FiveThirtyEight, and one of the sharpest science journalists working today. She's also a former elite Nordic skier for Team Rossignol and a national collegiate cycling champion, so when she set out to investigate the multibillion-dollar recovery industry for her book Good to Go, she brought both a scientist's rigor and an athlete's bullshit detector. In this episode, Zoë and Brendan talk to Christie about why cold plunges might actually delay your recovery, how your sleep tracker could be making your sleep worse, and why the most effective recovery strategies are boring, cheap, and unsexy. They dig into the rise of the "recovery industrial complex", from Tom Brady's infrared pajamas to cryotherapy chambers that NBA teams bought just because other teams had one, and what the research actually says about inflammation, ibuprofen, HRV, and the post-workout "window" myth. Christie also makes a compelling case for radical acceptance, situational awareness for your body, and trusting your own perceptions over your Garmin readiness score. Plus: the beer mile, knitting as recovery, and why pizza might be the most underrated performance fuel.
February 3 · 51 min
Brad Stulberg on How to Be Excellent Without Burning Out
Brad Stulberg co-wrote Peak Performance with Steve Magness and has spent over a decade studying what excellence actually requires. He joins Zoë and Brendan to dismantle the myths of hustle culture and explain why genuine excellence isn't about optimization, it's about caring deeply about something worthwhile. We dig into "zombie burnout" (exhaustion from doing too little of what lights you up), what Brad learned from studying Courtney Dauwalter and powerlifter Layne Norton, and why chasing flow states prevents you from experiencing them. A grounded, research-backed conversation about pursuing excellence without losing yourself. Brad Stulberg is the author of The Way of Excellence, Master of Change, and The Practice of Groundedness. He's on faculty at the University of Michigan and hosts the podcast Excellence, actually. Sponsor: This episode is brought to you by LMNT—electrolytes with no sugar, no BS. Try their chocolate flavors heated up for the ultimate winter hydration hack. Get a free sample pack with any order at drinklmnt.com/ultrasignup. Featured Race: The Devil Makes Three 50k and 10 Miler — May 16th in Waxhaw, North Carolina. Technical singletrack, prairie grass, lake views, generous cutoffs, and a low entry fee because trail running should be accessible. Cupless race, so bring your own hydration. Registration closes May 13th at ultrasignup.com.
January 20 · 1 hr 1 min
Why Run 205 Miles? Doug Mayer on Tour de Géants and the Hero's Journey
What happens when you strip away sleep, ego, and every external measure of success for 330 kilometers? Doug Mayer, founder of Run the Alps, former Car Talk producer, and three-time Tour de Géants finisher, has spent years trying to answer that question. His new graphic novel, Last of the Giants, is his best attempt yet. In this episode, Doug joins Zoë and Brendan to talk about leaving a 25-year career in radio to build a trail running tour company in Chamonix, why he kept going back to one of the world's most grueling ultramarathons, and how he translated the experience of hallucinating in a snowstorm at 3am into a visual story. He shares what he learned from interviewing neuroscientists, a Buddhist monk who specializes in suffering, and the world's leading expert on pilgrimages, all in service of understanding why we do hard things and what we bring back from them. The conversation touches on "meeting the dragon" (a Buddhist concept for the moment when your usual tools stop working), the hero's journey, why Tour de Géants feels like "the PhD of ultrarunning," and how Doug accidentally started dating someone mid-race because her prefrontal cortex was too exhausted to know better. Links: • Last of the Giants by Doug Mayer, available at Bookshop.org, Amazon, and wherever books are sold •Run the Alps – trail running tours in the European Alps •Running Warehouse – gear guides and the Salomon Genesis •Salt Lake Foothills Trail Races – May 30, 2026 (10k, half, 50k, 50 miler) More from UltraSignup Podcasts: •The Buzz with Buzz Burrell – deep dives into ultrarunning culture and philosophy •Between Two Pines – A trail running podcast that doesn't take itself too seriously
January 6 · 50 min
What a PhD Mathematician Learned About Running 100 Miles
Pat Cade has a PhD in mathematics, coaches high school cross country in Leadville, Colorado, and has finished the Leadville 100 six times. In this conversation, he explains what years of research math taught him about endurance: small steady progress compounds, inspiration only strikes if you're showing up every day, and sometimes the breakthrough comes when you stop following the plan and just go climb the mountain because it's beautiful outside. Pat shares how he and his wife landed in Leadville after leaving academia in New York, and how they decided to pour their energy into coaching and teaching after facing infertility. He breaks down what actually makes a good coach (hint: it's not yelling), why training at 10,000 feet requires rethinking everything you learned about recovery, and what the Leadville 100's Dream Chaser program is all about. He also attempts to explain his dissertation, including whether the universe might be shaped like a donut, in terms anyone can follow. Zoë and Brendan are mostly able to keep up. This episode is brought to you by LMNT, the tasty electrolyte drink mix with sodium, potassium, and magnesium. Pro tip for winter: heat up their chocolate salt or chocolate caramel flavors for a hydration hack that doubles as hot cocoa. And if you missed it, the fan-favorite lemonade salt is back full time. Get a free sample pack with any order at drinklmnt.com/ultrasignup. Featured Race: The Salt and Sulphur 420 is a 420-mile journey run from Salt Lake City to West Yellowstone, traversing the Wasatch Range, Bear Lake, Jackson Hole, the Tetons, and finishing at the doorstep of Yellowstone. This isn't a stage race—it's a test of resourcefulness and mental grit across four states, with all proceeds benefiting the Women's Center in Salt Lake City. Registration closes February 1st. Learn more and sign up at ultrasignup.com/register.aspx?did=118718.
Dec 23, 2025 · 1 hr 9 min
Best of 2025: On Insanity, Effort, and Choosing Your Obsessions Wisely
For the final episode of 2025, Zoë and Brendan share their own year-end reflections, summits, snacks, and slogs, including Zoë's experience hitchhiking to the start line of a 78-mile race in Italy, arriving 90 seconds before the gun went off to stand between Kilian Jornet and Jim Walmsley in a downpour that would last 15 hours. Then they pull their favorite moments from this year's interviews. You'll hear coach Mario Fraoli explain why the marathon is where racing ends and insanity begins. Steve Magness on why running might be the healthiest cult you can join. Alex Hutchinson on the effort paradox, why we value things because they're hard, not in spite of it. Sabrina Little on running as a laboratory for virtue. And Dan Lieberman, who co-authored the original "Born to Run" research, telling Zoë and Brendan to their faces that ultra running is absolutely, completely, and totally bizarre. Thanks for spending 2025 with The Trailhead. See you on the trails in 2026. Featuring: Mario Fraoli, Steve Magness, Alex Hutchinson, Sabrina Little, and Dan Lieberman This episode is brought to you by Victory Insoles. Get carbon fiber energy return without changing your stride. Try them risk-free for 90 days and get 25% off with code TH25 at checkout. Featured Race: SoCal Ultra Trail at Tejon Ranch — Run 270,000 acres of California's largest private land, normally closed to the public. Oak-filled canyons, the legendary Grapevine climb, and distances from 11K to 100K. February 28, 2026.

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