John Kelly holds a spot in the Guinness World Book of Records, is a Chief Technology Officer, and is the 15th person to finish the Barkley Marathons. John shares stories on how he trained for the Montane Spine Race, surviving the Barkley, and how he still has time for family at the end of the day. Who is John Kelly?  John Kelly is an ultrarunning data scientist, father of three with a former triathlon habit. He is the Chief Technology Officer of Envelop Risk, and to support his ability to do that day job with a clear mind he runs, bikes, and hikes. He also used to be a pretty serious water skier and World of Warcraft player. John has been running most of his life. In high school he was a good, but not a great runner. During college and grad school, John essentially took a full decade off from the sport. After grad school, he rediscovered his love of the mountains on a road trip out west that included hiking the John Muir Trail with his incredible wife Jessi. John ended up running the 2013 Marine Corps Marathon, and it was an absolute disaster. It was his first race in 10 years, his longest race by 20 miles, and his training had been horribly insufficient. Of course, immediately after that, John said, “I think I can do better” and signed up for another. John has always been a math and computer person who enjoys finding patterns and automating complex processes. An opportunity at a startup, where there was less bureaucracy and John would have more influence over research and applications, was something he couldn’t walk away from. In the summer of 2015, around the same time that he got serious about ultrarunning and triathlons, as he made the jump to become the Director of Analytics at QxBranch, a data analytics startup in downtown DC. That startup partnered with a company in the UK to create another startup, Envelop Risk, that could better deliver that product to customers and insurance partners. Highlights [3:30] Setting a world record [7:30] The appeal of data science [9:55] Returning to running [15:44] Thriving at the Barkley Marathons [22:30] How ultra resilience transfers to everyday life [30:06] The biggest mistakes people make with marathons [36:15] John’s training regimen [43:50] Sleep optimization for performance endurance [49:45] Use data in the training [55:38] Maintaining work-life balance Resources The Barkley Marathons Documentary Barkley Marathons Upper Kelly Camp David Roche -Training For Busy Athletes Garmin Forerunner 945 The Bible Sponsors CAR.O.L You don’t have time for that 45 minute jog.  You need something fast, efficient, and leaves you wanting more.  My favorite tool for this is the CAR.O.L. She is a life-changing bike, that provides you all the endurance you need into two 20 second bursts.  Yes, you read that right.  That’s 40 seconds of max-effort, including the warm up and cool downs, you get a kick-ass workout in 8 minutes and 40 seconds.  The CAR.O.L is a resistance bike powered by artificial intelligence, which personalizes and optimizes the resistance, so you hit your maximum intensity levels and maximize glycogen depletion every single time.  The proof is really in the pudding. CAR.O.L’s effectiveness was independently verified by the American Council on Exercise. I gave the CAR.O.L bike spin at Health Optimization Summit in London this year, and she kicked my ass so much that I had to get one. Check out CAR.O.L at carolfitai.com  If you have limited time and want a kick ass workout, which basically everyone that listens to this show does, use the code DECODING150 for a big discount, head over to CarolfitAI.com to secure yours. Resilient Nutrition The guys at resilient nutrition have done a fantastic job of tackling the endurance nutrition space.  Their first product, Long Range Fuel comes with not only what they describe as Beyond Nut Butter, energy-dense food, but al