Watching tour de france every year I have always wondered how much calories do these riders consume.
These super fit riders are on a bike for 3 weeks, cycling for over four hours a day. With such a grueling schedule the energy demands must be astronomical.
Daily amount of calories consumed by a rider.
According to Velo News tour article,
Researchers have actually quantified the nutritional consumption of riders in the Tour de France (1991 Tour), and the Tour of Spain (1998 Tour), and measured that riders average a daily food intake of 4,000 to 8,000 calorie
Daily carbohydrates consumed by a Tour De France rider
It is estimated that the Tour de France requires a carbohydrate intake of 13 g/kg (6 g/lb.) of body weight, and they need to intake these amounts day after day.
Another interesting analysis is from sports scientists.They have a neat anaylsis on how much a 78Kg rider will need to consume to avoid fatigue and remain competitive. Read it at sports scientist