Have I picked an impossible challenge? A reality check ahead of my world record attempt

Welcome to this Big Fish mini series which follows me as I attempt to complete a Guinness world record of 30 marathons in 30 days on sand through the Jordanian desert. I fly out on Saturday, and start the race on Monday 29th July. Many people think this challenge isn't even possible; but I disagree. In this episode I'm joined by my running coach Chris Taylor and trainer Shaun Stafford to go through all the details of the race, including the route, how I've been training and all the challenges we're expected to encounter. Please donate if you can, at www.makesomenoise.com/spencer-matthews-challenge