This Summer Will Break You — or Build You

The Pace Trap: the reason your marathon paces fall apart the moment it gets hot — and it isn't the reason you think. If you're chasing sub-3 or sub-3:30 and your summer paces have slipped, you've probably decided you're losing fitness. You're not. Here's what the heat is actually doing to your watch, why the number is lying, and the one thing to anchor to instead. In this video: - Why heat slows your pace at the same effort — physics, not lost fitness - The problem with heat pace-adjustment charts, and what to anchor to instead - How to compare a summer session to a spring one without fooling yourself - What heat training quietly banks for a cool race day - Heat vs altitude: the most underrated free tool you have - What Western States 2026 showed about chasing the number 00:00 It's July and your pace just fell apart 00:32 Why heat breaks your pace (the physics) 01:29 The pace-chart trap 02:49 The race that taught me this 04:29 The fix: anchor to effort, not pace 07:03 How to compare summer and spring sessions 08:47 Banking heat adaptation 10:01 Proof at 100 miles: Western States 10:21 Trust the process Book a Performance Strategy Call — a free 15-minute call to map where you are and how to get to your goal: https://coaching.allin.run/book-psc All In Performance Coaching helps committed marathoners — mostly working professionals chasing sub-3 and sub-3:30 — train with the precision usually reserved for elites. Coaching to effort; building the full engine and the durability to hold form late. New videos most weeks. #marathontraining #runningtoeffort #heattraining Music track: Back in Time by Aylex Source: https://freetouse.com/music Royalty Free Background Music