Originally Posted by
Machka
You burn somewhere between about 500 and 600 calories per hour. If a 30 mile ride takes you 2 hours, you will have burned about 1000 to 1200 calories. You don't need to replace those calories calorie-for-calorie. You only need to replace about half or slightly less.
Correct. You don't need to replace the fat that you burn - you only need to replace the carbs that you burn. Which is good, because you probably don't have enough blood to send to your stomach to digest all that you are burning.