Nutrition
Marathon Wall Prevention
Marathon wall prevention combines in-race carbs, smart early pacing, and taper glycogen loading to avoid late-race energy collapse near miles 18–22.
Marathon wall prevention targets the late-race energy crash when glycogen runs low and pace collapses—often around mile 18–22 for under-fueled runners. Fixes include adequate carb intake during the race, conservative early pacing, and carb-loaded muscles from taper nutrition.
Dehydration and heat amplify the wall even with some fuel onboard.
Common questions
-
Can training alone prevent the wall?
Aerobic fitness helps but cannot replace mid-race carbs on a marathon. Under-fueling in training hides problems until race day.
Related terms
Put Marathon Wall Prevention into practice
Ohga connects nutrition, fitness, focus, and habits with an AI copilot that learns your patterns. Join the waitlist for early access.