Originally Posted by Carbonfiberboy

In a general sense, this is true. However it's greatly complicated by the variation in metabolic load involved in processing food intakes. It's very difficult to gain weight by eating only carbs. Cheeseburgers, OTOH, are deadly. See:
https://www.researchgate.net/publica...feeding_in_man
Doing the calculation, during the period of glycogen synthesis, no increase in body fat mass from carb consumption. After glycogen saturation, in the example of 1900 calories of carbs eaten, 550 of those calories are lost to the chemical process of turning them into fat. Fat eaten, OTOH, goes directly to body fat with no loss of calories to conversion.

So eat all the carbs you want on the bike.