Struggling with race nutrition for ultras, any tips?
I'm a 30M marathoner, been at it for 7 years. I'm trying to dial in my nutrition for ultras and it's been a struggle. The last race, I was totally wrecked around mile 30 because I didn't fuel right. What do you seasoned RD sports nutritionists recommend for hydration and calorie intake during long runs? I know it's about balance, but specifics would help!