Originally Posted by velogirl
I don't think that one would burn 1,000 calories biking 20 miles. But I like your concept.
Today I did 43 miles and my HRM estimated that that was just shy of 2,000 calories. Assuming its anywhere near correct, I'd say its likely that many people can burn 1000 cal/20 miles. Ofc, I'm a big guy (220) and today's ride had 2000 ft of climbing and a nice steady wind to help up the ante a bit.