It is estimated that the average 155-pound person could burn around 149 calories for every 3 miles they pedal. However, this would depend on the terrain. A hilly terrain might force you to put in more effort and burn more additional calories. If you bike 5 miles, it would take even longer, but burn more calories. The calories burned are heavily influenced by a variety of factors like how long it takes to bike the set distance of the distance your cycle.