Nutrition for Ultrarunners: The Science, Myths, and Strategies That Actually Work with Claire Shorenstein

If you’ve ever struggled with GI issues, hydration confusion, high-carb hype, or figuring out what to eat as an ultrarunner… this episode is going to change everything.In this conversation, I sit down with Board-Certified Sports Dietitian, endurance athlete, and host of the Eat for Endurance podcast — Claire Shorenstein — to break down the nutrition strategies that actually matter for long-distance runners.We dive deep into the real science behind fueling, hydration, gut training, electrolytes, and everyday nutrition habits — and Claire shares incredibly practical insights that every ultrarunner needs to hear.Inside the episode, you’ll learn:• Why GI issues happen — and the specific steps to prevent them• How to use sodium the right way (and why many runners overdo it)• Whether high-carb fueling is right for you — and how to know• The hydration mistakes causing stomach blow-ups late in races• What everyday nutrition should look like for busy runners• How to fuel when appetite is suppressed or your schedule is chaotic• The truth about supplements — and who actually needs them• Why foundational nutrition matters more than “sexy” strategies• How to personalize your fueling using real science, not trendsThis episode is PACKED with actionable advice, myth-busting clarity, and ultra-specific insight you can use immediately in your training and racing.Whether you're brand new to ultras or deep into 100-milers, this conversation will help you fuel smarter, feel stronger, and perform at your best.SHOW LINKS:Want to be coached by me and my team to crush your next ultramarathon in our 1:1 coaching program?⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠ We have a Black Friday Sale NOW for 30% off your first month! ⁠Book a free call with one of our coaches to see if we are a good fit at ⁠⁠theeverydayultra.com⁠⁠Register for our race, The Desert Peak Ultra 100K + 50K at ⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠desertpeakultra.com⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠Want to work with me to crush your next ultramarathon in our group coaching program? Sign up for our group coaching program here:⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠ ⁠https://www.theeverydayultra.com/group-coaching⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠Follow Joe on IG:⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠ ⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠https://www.instagram.com/joecorcione/⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠Everyday Ultra YouTube Channel:⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠ ⁠https://www.youtube.com/channel/UCUelKGeptWZivD6yRIDiupg⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠Get 25% off TrainingPeaks Premium to track and plan your training better by ⁠⁠⁠⁠⁠signing up here⁠⁠⁠⁠⁠ and use code CYBER2025Try CurraNZ to boost recovery and performance and get 15% off your first order with code EVERYDAYULTRAPOD at ⁠⁠⁠⁠⁠⁠www.curranzusa.com⁠⁠⁠⁠⁠Try PlayOn Pain Relief Spray at⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠ ⁠playonrelief.com⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠Try Bear Butt Wipes and get 10% off your order with code EVERYDAYULTRA at bearbuttwipes.comTry Janji apparel and get 10% off your order with code EVERYDAYULTRA at Janji.comClaire's Fuel for Life Crew Membership: https://www.eatforendurance.com/fuel-for-life-crewClaire's Podcast: https://www.eatforendurance.com/podcastClaire's 1:1 Services: https://www.eatforendurance.com/virtual-nutrition-coaching-for-athletes

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