+1 what Machka said. She couldn't finish a long ride without getting her fueling right.
I can get away without eating on a 3-hour ride, if I have a sports drink (100-150 kcal).
On longer rides, I average 50 grams of carbs (200 kcal) per hour in food and sports drink.
I drink about 500-600 ml of fluid per hour.
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Ride, Rest, Repeat. ROUVY:
terrymorse
