Ultra nutrition is a whole different game from marathon fueling.
Source: Outside
Tag: fueling
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What to Eat Before a Run
Eating the right foods at the right time can make your runs feel significantly better.
Source: Runner’s World
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How to Fuel During a Marathon
Proper fueling can mean the difference between hitting the wall and finishing strong.
Source: Runner’s World
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Wall Phenomenon in Marathon Racing: Physiological Mechanisms
Comprehensive study of 500 marathon runners using continuous glucose monitoring and pace analysis throughout races. The “wall” phenomenon correlates strongly with muscle and liver glycogen depletion, typically occurring between miles 18-22. Athletes following structured fueling protocols (30-60g carbs/hour after mile 8) showed 73% reduction in wall occurrence. Blood lactate and rating of perceived exertion data confirm metabolic shift from primarily glycolytic to increased fat oxidation.
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Carbohydrate Intake During Marathon Racing
Randomized controlled trial comparing different in-race fueling strategies in 120 recreational marathoners. Multiple carbohydrate sources (glucose:fructose 2:1 ratio) at 60g/hour provided optimal performance benefits with minimal GI distress. Intake timing critical – beginning after 60-90 minutes prevents early glycogen depletion. Individual tolerance varies, requiring training-specific fueling practice during long runs.
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Nutritional Strategies for Multi-Hour Ultra Events
Nutritional intake analysis during ultra-marathons of 6+ hours duration. Real-time intake monitoring revealed successful strategies emphasizing variety, palatability, and digestibility. Whole foods became increasingly preferred over sports products after 4-6 hours. Caffeine intake of 100-200mg every 3-4 hours improved alertness and perceived exertion. Individual experimentation during training essential due to high variability in tolerance.