Nutrition Deep Dive: The Evolution of High Carb Fueling

In this solo episode of The Endurance Athlete Journey Podcast, Katie takes a deep dive into the fascinating evolution of endurance fueling and how high-carb strategies are reshaping modern performance. From the early days of marathon racing in the late 1800s—when athletes fueled with steak, eggs, whiskey, and even avoided water—to today’s precision fueling strategies of 80–120 grams of carbs per hour, Katie explores how sports nutrition has transformed over time. Using recent breakthroughs in marathon performance, including two sub-2-hour marathon performances in the London marathon, Katie examines the major factors driving athletes faster than ever before: fueling, shoe technology, training advancements, recovery science, and evolving sports nutrition products. This deep dive focuses on the fueling and sports nutrition products. This episode covers: -The surprising history of marathon fueling -Why athletes once believed dehydration improved performance -The discovery of glycogen and carbohydrate loading -The rise of Gatorade, gels, and modern sports nutrition -The low-carb/high-fat era and why many elite athletes have moved away from it -How under-fueling still impacts many endurance athletes today -The importance of gut training and individualized fueling -Why modern athletes are prioritizing fueling over simply staying lean -The future of high-carb fueling and endurance performance Katie also reflects on how outdated “tough it out” mindsets still influence athletes today and explains why fueling is no longer viewed as separate from training—but an essential part of it. Whether you're a marathoner, triathlete, cyclist, or endurance athlete looking to improve performance and recovery, this episode offers valuable insight into how fueling strategies have evolved—and where they may be heading next. For coaching inquiries: Coach Katie → https://fuel2run.com Podcast Email → [email protected]