Hmmm... I do eat while riding, but definitely not 250-300 calories per hour. And I do eat quite a bit after the ride, although it's not junk food.

It's certainly worth a try... at this point, I'm desperate to figure it out.

I go to Lifetime Fitness gym and they have a philosophy of "eating your exercise calories". In other words, say 1200 calories is what you need to lose weight. And your workout burns 500 calories. They want you to eat 1700 calories on that day -- 1200 + your exercise.

I tried that for about 6 months and didn't lose a pound. Now I'm trying to just stick with 1300-1500 calories a day. Except on long ride days when I eat more... but the "more" is definitely after the ride and not during the ride.

I'll try it next weekend and see how it goes.