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by Jason Koop
Coach Jason Koop covers training, nutrition and recent happenings in the ultramarathon world.
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The most recent episodes — sign up to get AI-powered summaries of each one.
- Oct 8, 20251h 1m
Koop AI, Unboxed
We reveal how Koop AI turns 25 years of coaching into an adaptive, terrain-aware training system for trail and ultra runners. We share why we built it, what it does today, where it falls short, and how we’re improving it with real race data. • why serious runners wanted expert validation without elite pricing • the three pillars of coaching we modeled: prescribe, analyze, communicate • onboarding that pulls real history, constraints, and race demands • dynamic plan changes for travel, missed runs, and time budget shifts • NGP-based feedback for trail intensity instead of raw pace • race specificity: course demands, heat, altitude and future prompts • features live now: chatbot tied to Koop’s content, calendar, swaps, block moves, cross-training, volume trends • limits we own: early-stage feedback, UI/UX, depth of “why,” and NGP-driven plan adjustments still shipping • how we validate against coach standards and major races like UTMB • long-term mission to make top coaching accessible to everyone Sign up: https://www.koopai-endurance.com/app/
- May 23, 20251h 3m
Brain Endurance Training with Scott Frey, PhD | KoopCast #244
Dr. Scott H. Frey is an internationally renowned neuroscientist and psychologist, accomplished endurance athlete, author, and teacher. Scott helps individuals and groups identify and realize their aspirations. He can be reached at: Scott@CerebralPerformance.com Want to become a better coach? Check out UESCA’s Ultramarathon Coach Certification.- https://uesca.com/courses/uesca-ultrarunning-coach-certification/ Sign up for CTS Coaching-https://trainright.com/coaching/ultrarunning/ Subscribe to Research Essentials for Ultrarunning-https://www.jasonkoop.com/research-essentials-for-ultrarunning Information on coaching- https://www.trainright.com Koop’s Social Media Twitter/Instagram- @jasonkoop Buy Training Essentials for Ultrarunning: Amazon-https://www.amazon.com/dp/B09MYVR8P6 Audible-https://www.amazon.com/dp/B09MYVR8P6 #ultrarunning #trailrunning #running #sports #sportsperformance #sportsscience
- May 16, 202557 min
Insights from Ultramarathon Pacing Strategies with Baptiste Morale | KoopCast #243
Baptiste Morel-Prieur is a author on a recent paper titled Submaximal force-velocity relationships during mountain ultramarathon: Data from the field Research from the 2023 UTMB offers ground-breaking insights into trail running performance by analyzing how runners handle different gradients throughout a race. Batiste Moral shares his data-driven approach that identifies specific areas where athletes can improve from year to year. • Analyzing Strava data from 600 UTMB participants reveals distinct "force" (uphill ability) and "velocity" (flat ground speed) components of performance • These components have no correlation with each other, meaning they represent different physiological abilities requiring targeted training • Case study of Jim Walmsley shows 76% of his time difference behind Kilian Jornet in 2022 occurred on gradients steeper than 20% • After focused training in the Alps, Walmsley specifically improved his steep climbing ability before winning UTMB 2023 • Durability analysis suggests flat terrain speed deteriorates more than uphill capability during ultras, indicating flat-ground training after fatigue might be more valuable • Western States vs. UTMB comparison shows dramatically different terrain profiles despite both being 100-mile races• Simple heart rate-based test can help identify your personal gradient-specific weaknesses Papers discussed-Decoding Ultramarathon: Muscle Damage as the Main Impediment to Performance Sign up for CTS Coaching-https://trainright.com/coaching/ultrarunning/ Subscribe to Research Essentials for Ultrarunning-https://www.jasonkoop.com/research-essentials-for-ultrarunning Information on coaching- https://www.trainright.com Koop’s Social Media Twitter/Instagram- @jasonkoop Buy Training Essentials for Ultrarunning: Amazon-https://www.amazon.com/dp/B09MYVR8P6 Audible-https://www.amazon.com/dp/B09MYVR8P6 #ultrarunning #trailrunning #running #sports #sportsperformance
- May 9, 20251h 6m
Monitoring for Overtraining Syndrome with Sophie Herzog, PhD | KoopCast #242
Sophie Herzog is the Owner and Co-founder and primary performance analyst at the MRYA center for athlete development. MYRA institute: https://www.myracad.com/ Koopcast on HRV https://www.myracad.com/articles/the-athletes-career-insurance-implementation-of-monit oring-tools-to-prevent-underperformance-in-sports Sign up for CTS Coaching-https://trainright.com/coaching/ultrarunning/ Subscribe to Research Essentials for Ultrarunning-https://www.jasonkoop.com/research-essentials-for-ultrarunning Information on coaching- https://www.trainright.com Koop’s Social Media Twitter/Instagram- @jasonkoop Buy Training Essentials for Ultrarunning: Amazon-https://www.amazon.com/dp/B09MYVR8P6 Audible-https://www.amazon.com/dp/B09MYVR8P6 #ultrarunning #trailrunning #running #sports #sportsperformance
- Apr 24, 202551 min
Training the Gut for Ultramarathons with Isabel Martinez #241
Isabel Martinez is a Research Sports Dietitian In the Department of Nutrition, Dietetics and Food at Monash University. She is the author of several studies on gut training as well as consults with athletes in this area. The Effect of Gut-Training and Feeding-Challenge on Markers of Gastrointestinal Status in Response to Endurance Exercise: A Systematic Literature Review https://pubmed.ncbi.nlm.nih.gov/37061651/ Development of a low-fructose carbohydrate gel for exercise application https://www.sciencedirect.com/science/article/pii/S2405844024095288 Additional resources: https://www.cerebralperformance.com/ Sign up for CTS Coaching-https://trainright.com/coaching/ultrarunning/ Subscribe to Research Essentials for Ultrarunning-https://www.jasonkoop.com/research-essentials-for-ultrarunning Information on coaching- https://www.trainright.com Koop’s Social Media Twitter/Instagram- @jasonkoop Buy Training Essentials for Ultrarunning: Amazon-https://www.amazon.com/dp/B09MYVR8P6 Audible-https://www.amazon.com/dp/B09MYVR8P6 #ultrarunning #trailrunning #running #sports #sportsperformance
- Apr 17, 20251h 37m
The Brain’s Role in Ultrarunning Performance with Scott Frey, PhD (2024) #240
Dr. Scott H. Frey is an internationally renowned neuroscientist and psychologist, accomplished endurance athlete, author, and teacher. Scott helps individuals and groups identify and realize their aspirations. He can be reached at: Scott@CerebralPerformance.com Additional resources: https://www.cerebralperformance.com/ Sign up for CTS Coaching-https://trainright.com/coaching/ultrarunning/ Subscribe to Research Essentials for Ultrarunning-https://www.jasonkoop.com/research-essentials-for-ultrarunning Information on coaching- https://www.trainright.com Koop’s Social Media Twitter/Instagram- @jasonkoop Buy Training Essentials for Ultrarunning: Amazon-https://www.amazon.com/dp/B09MYVR8P6 Audible-https://www.amazon.com/dp/B09MYVR8P6 #ultrarunning #trailrunning #running #sports #sportsperformance
- Apr 10, 20251h 8m
Durability in Ultrarunning with Michele Zanini, PhD | KoopCast #239
Michele Zanini is a PhD candidate at Loughborough University as well as the head of Strength and Conditioning for the Italian Triathlon Federation. During this podcast we ddiscuss the concept of durability as it relates to ultramarathon performance. Papers discussed- Durability of Running Economy: Differences between Quantification Methods and Performance Status in Male Runners Sign up for CTS Coaching-https://trainright.com/coaching/ultrarunning/ Subscribe to Research Essentials for Ultrarunning-https://www.jasonkoop.com/research-essentials-for-ultrarunning Information on coaching- https://www.trainright.com Koop’s Social Media Twitter/Instagram- @jasonkoop Buy Training Essentials for Ultrarunning: Amazon-https://www.amazon.com/dp/B09MYVR8P6 Audible-https://www.amazon.com/dp/B09MYVR8P6 #ultrarunning #trailrunning #running #sports #sportsperformance
- Apr 4, 20251h 19m
Polarized or Pyramidal Training for Ultrarunning with Michael Rosenblat, PhD #238
Michael Rosenblat comes back on the podcast to discuss his new paper exploring what types of interval workouts are most effective for Ultrarunners. Which Training Intensity Distribution Intervention will Produce the Greatest Improvements in Maximal Oxygen Update and Time-Trial Performance in Endurance Athletes? A Systematic Review and Network Meta-analysis of Individual Participant Data. Michael’s website-https://www.evidencebasedcoaching.ca/ Koop’s article on interval training-https://trainright.com/decoding-ultramarathon-interval-workouts/ Sign up for CTS Coaching-https://trainright.com/coaching/ultrarunning/ Subscribe to Research Essentials for Ultrarunning-https://www.jasonkoop.com/research-essentials-for-ultrarunning Information on coaching- https://www.trainright.com Koop’s Social Media Twitter/Instagram- @jasonkoop Buy Training Essentials for Ultrarunning: Amazon-https://www.amazon.com/dp/B09MYVR8P6 Audible-https://www.amazon.com/dp/B09MYVR8P6 #ultrarunning #trailrunning #running #sports #sportsperformance
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About KoopCast
Coach Jason Koop covers training, nutrition and recent happenings in the ultramarathon world.
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