It’s mostly carbs which has 4kCAL/g so ~ 110g of carbs or 1.4g / kg of body weight
I’m 5’11" and 174lbs (79kg)
Using gels, bars and liquid carbs,
At 300-400 / hour i ran out of energy during the marathon and bonked
At 400-500 / hour , it’s too much for my stomach and at some point, i stopped eating or i puke.
Using Maurten enabled the 550/hour. It’s 1 maurten320 + 1 solid bar for 200-230 kCAL. If I use it on a long ride without much running, I get home and I’m not hungry (weird feeling ) and not too tired… allows me to go to Home Depot as Pete said ftw!