I just got this off of Livestrong.com. Makes total sense with the ranges and weights.
Vigorous Cycling
When you bicycle 14 to 15.9 mph, you burn about 58 calories per mile if you weigh 190 pounds, about 47 calories per mile if you’re 155 pounds and about 39 calories per mile if you’re 130 pounds.
Moderate Cycling
When you bicycle 12 to 13.9 mph, you burn about 53 calories per mile if you weigh 190 pounds, about 43 calories per mile if you’re 155 pounds and about 36 calories per mile if you’re 130 pounds.
Light Cycling
Bicycling 10 to 11.9 mph is regarded as a “light effort” by the Wisconsin Department of Health. When you bicycle 10 to 11.9 mph, you burn about 47 calories per mile if you weigh 190 pounds, about 38 calories per mile if you’re 155 pounds and about 32 calories per mile if you’re 130 pounds.
Read more:
http://www.livestrong.com/article/13...#ixzz2QBpWF14Z