Nutrition for Ultrarunners: The Science, Myths, and Strategies That Actually Work with Claire Shorenstein
Everyday Ultra
Heat, intensity and food choices' gut impact
Claire explains how heat, race intensity and solid foods or added fats/protein slow digestion and worsen GI symptoms.
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 trends
This 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:
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Claire's Podcast: https://www.eatforendurance.com/podcast
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