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Endurance Unlimited

Endurance Unlimited

By: TrainingPeaks
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 Dial in those workouts with deep insights and cutting-edge science from the most prominent voices in the endurance and hybrid sports world. Whether you're a triathlete, cyclist, runner, ultra-endurance athlete or coach, and many other sport types, subscribe now to learn how to train for success. Endurance Unlimited is your endurance training resource. To learn more about how TrainingPeaks can help you achieve your training goals, visit us at trainingpeaks.com.© 2025 TrainingPeaks CoachCast Hygiene & Healthy Living Running & Jogging
Episodes
  • Molly Seidel and Cliff Pittman on the Shift from Running Marathons to Ultras Season 8 Ep. 2 to Trails

    Molly Seidel and Cliff Pittman on the Shift from Running Marathons to Ultras Season 8 Ep. 2 to Trails
    Feb 4 2026
    In this episode, we dig into an inspiring athlete’s evolution, exploring the high-stakes world of elite road marathoning and the tough transition to trail and ultra running. Olympic marathon bronze medalist Molly Seidel and her coach, Cliff Pittman, join us to walk us through her running journey —overcoming chronic injuries, recalibrating her goals after an Olympic medal, and battling the mental and physical challenges that come with shifting from polished pavement to rugged singletrack. You’ll hear firsthand how Molly faced setbacks, from broken bones to burnout, and how her passion led her to the trails. Cliff shares how he’s helping Molly adapt her world-class engine for the unique demands of ultras, blending thorough communication, athlete autonomy, and strategic training techniques. From dialing in race nutrition to conquering technical descents, this episode delivers real lessons — plus a behind-the-scenes look at one of the newest and most intriguing athlete-coach duos in endurance sports. Whether you’re a long-time road runner, aspiring ultramarathoner, or endurance coach, you’ll find wisdom, humility, and plenty of practical takeaways on embracing change, trusting the process, and honoring the journey.
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    1 hr and 2 mins
  • Transform Your Training with Smarter Sleep: Insights with Charlotte Edelsten - Season 8 Ep 1

    Transform Your Training with Smarter Sleep: Insights with Charlotte Edelsten - Season 8 Ep 1
    Jan 14 2026
    Host Dirk Friel is joined by sleep researcher and sleep coach Charlotte Edelsten, whose expertise is backed by over two decades of research on sleep and performance. Together, they dive deep into the science behind sleep for endurance athletes—addressing why sleep is a true foundation for training adaptations, injury prevention, and race-day performance. Charlotte Edelsten shares insights from her years conducting research at high-profile endurance events like UTMB Mont Blanc, unpacks why many athletes struggle with sleep quality (even Olympians!), and dispels myths about supplements and wearables. She discusses practical strategies for managing sleep during training and competition, including napping protocols, sleep banking, and how to optimize rest at altitude or before an ultra-endurance race. 00:00 "Endurance Training & Sleep Insights" 03:37 Sleep Disturbances in Athletes 09:10 Caffeine: Adenosine Blocker Explained 11:10 Limitations of Sleep-Tracking Devices 13:21 "Sleep's Impact on Athletic Performance" 18:46 "Understanding Sleep Through Sleep Diaries" 20:54 "Supplements Won't Cure Sleep Issues" 26:07 "Pre-Race Sleep and Mindset" 29:18 "Sleep Strategies and Performance" 31:01 "Gradual Sleep Extension for Athletes" 33:39 "Strategic Napping in Sports" 37:39 "Optimizing Sleep for Best Rest" 42:09 Sleep's Role in UTMB Success 43:49 "Fatigue Management for Runners" 47:42 "Caffeine Strategies in Training" 50:51 "Hallucinations From Extreme Sleep Deprivation" 55:12 "Endurance Unlimited: Follow & Train"
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    56 mins
  • Inside Cam Smith and the USA Skimo Team's Road to the 2026 Games - Season 7 Ep 20

    Inside Cam Smith and the USA Skimo Team's Road to the 2026 Games - Season 7 Ep 20
    Dec 23 2025
    On this episode of Endurance Unlimited, host Dirk Friel sits down with rising star Cam Smith, professional trail runner and ski mountaineering athlete who's just qualified for the 2026 Winter Games in Milan Cortina. Together, they dig into the strategy and preparation behind Team USA’s dramatic World Cup victory in Solitude, Utah—which not only put the U.S. a ticket to the Games for Skimo, but also set the stage for what’s next in this fast-evolving sport. Cam Smith shares his journey from ultra-endurance races to the high-intensity, quick-transition world of ski mountaineering, offering a behind-the-scenes look at the training philosophies, mistakes to avoid, and the unique demands of mixed relay competition. You’ll hear how he leverages both running and skiing to fuel his performance, and get an inside look at how emerging talent like Anna Gibson is shaking up the U.S. team. 00:00 "Mixed Relay Racing Strategies" 03:32 "Qualifying on Home Soil" 07:50 "Trail Running Meets Skiing" 12:44 "Balancing Racing Seasons and Goals" 15:41 "Short Turnaround: Leveraging Speed" 17:45 Training for Steep Mountain Racing 22:48 "Injuries, Adaptation, and Focus" 24:39 Future Trail Racing Plans 29:30 "Building a Strong Skimo Team" 31:26 "Join Our Thriving Federation" 36:50 "Pacing Strategies in Racing" 38:38 Downhill Training for Racing Success 43:02 "Post-Season Training Reset" 45:19 "Skimo's Impact and Future" 48:40 "Inspiring the Next Generation"
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    51 mins
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