Ultra Running Nutrition: How to Fuel for Performance, Avoid GI Issues, and Race Longer

Why It Matters

Understanding nuanced, individualized fueling strategies helps ultra‑runners avoid gut distress and performance loss, while promoting healthier, sustainable eating habits that can extend athletic careers.

Key Takeaways

• Prioritize food enjoyment over strict calorie counting for athletes.
• Ultra runners need lower carbohydrate rates than marathoners due to intensity.
• Assess underlying motivations before prescribing weight loss or body composition goals.
• Use food logs or photos to establish baseline without triggering disordered eating.
• Tailor fueling plans per race length, focusing on gut tolerance and timing.

Summary

The Fast Talk Podcast episode dives into ultra‑running nutrition with Dr. Stephanie, a former Nordic skier turned ultrarunner who holds a PhD in sports nutrition. She explains how fueling strategies for ultra events differ markedly from those for cycling or marathon running, emphasizing the unique challenges of long‑duration, low‑intensity effort. Key insights include the need to shift focus from rigid calorie or gram targets to a holistic relationship with food, recognizing that athletes often over‑analyze intake. Stephanie highlights that ultra runners typically require fewer carbohydrates per hour than marathoners, can tolerate a broader range of foods, and must prioritize gut comfort over maximal carbohydrate delivery. She also stresses the importance of probing athletes’ motivations—especially weight‑loss goals—to avoid unnecessary body‑composition pressures. memorable moments feature Stephanie’s mantra, “We eat food, not numbers,” and her practical approach of using simple food‑photo logs to capture baseline intake without exacerbating disordered‑eating tendencies. She recounts tailoring plans for each client, from adjusting a breakfast oatmeal to testing race‑day fueling on a long run, illustrating how individualized feedback loops improve long‑term adherence. For coaches and athletes, the discussion underscores that effective ultra‑endurance nutrition is less about universal formulas and more about personalized, sustainable habits that respect gut tolerance, psychological relationship with food, and the specific demands of ultra‑distance events. Implementing these principles can enhance performance, reduce gastrointestinal issues, and support athletes’ overall well‑being.

Original Description

In this episode of the Fast Talk Podcast by Fast Talk Labs, we break down the science and strategy of nutrition for ultra endurance events, with a special focus on ultra running. From daily fueling habits to race-day carbohydrate intake, this conversation explores what it really takes to fuel long efforts, avoid common mistakes, and perform at your best over hours of racing.

We’re joined by Stephanie Howe, an elite ultra runner, coach, and sports nutrition expert with a PhD in nutrition. Drawing from both research and real-world experience, Stephanie explains how athletes can build healthier relationships with food, dial in their fueling plans, and avoid the GI distress, energy crashes, and underfueling issues that so often derail ultra performances.

🧠 In this episode, you’ll learn:

• How ultra running nutrition differs from fueling for cycling and shorter endurance events

• Why carbohydrate intake matters for ultra performance and recovery

• How many grams of carbs per hour most athletes should aim for

• Why gut training is essential before race day

• Why fasting usually backfires for endurance athletes

• How to balance performance nutrition with long-term health and enjoyment of food

• The role of hydration, sodium, caffeine, and palate fatigue in long races

• How to recognize when your everyday nutrition may be limiting your training

🎯 Whether you’re training for your first ultra, trying to avoid race-day stomach problems, or simply looking to improve your fueling strategy, this episode offers practical, science-backed guidance you can actually use.

🎙️ Featured Experts:

• Stephanie Howe – PhD in Nutrition, Ultra Runner, Coach, and Sports Nutrition Expert

• Rob Pickels – Fast Talk Labs Coach and Co-Host

• Griffin McMath – Fast Talk Labs Host

• Trevor Connor – Fast Talk Labs Coach and Performance Expert

• Dr. Andy Pruitt – Sports Medicine Specialist

• Dr. Jeff Sankoff – The Tri Doc

• Neal Henderson – Endurance Coach and Sports Scientist

📈 This episode is especially valuable for ultra runners, endurance athletes, and coaches who want to bridge the gap between research and real-world fueling practice.

👉 Subscribe to Fast Talk Labs for more science-backed episodes on endurance training, recovery, nutrition, physiology, and performance.

🔗 More at [https://www.fasttalklabs.com](https://www.fasttalklabs.com/)

Fast Talk Labs is your source for the science of endurance performance—cycling training, physiology, recovery, nutrition, and data-driven coaching tips to help athletes of all levels get faster.