Originally Posted by
DocM
3500 seems reasonable. My Garmin 705 claimed 4700 calories on a 65 mile ride with 5300 feet of climbing and three 19% grades. I'm 6'4" and 180#.
As far as eating, I don't do anything special, but I do carry food with me or stop at the bakery and reload.
it is a known fact that Garmin units produced inflated calorie expenditure numbers. in fact some will argue the numbers are at least twice as high. they use speed and distance as the key factors. they do not take in to account terrian. later.