you can burn as many as 750 to 1 000 calories per hour if the biking is hard and continuous. most people don't work that hard and so 500-600 calories is more likely. but your calorie expenditure will vary greatly depending on whether you're on a stationary or outdoor bike how hard you work how efficient your bike is and other factors. in comparison to running biking burns about 25% fewer calories if you equal out the workload. however your calorie expenditure while biking is going to vary and it's entirely possible to burn more calories on a bike than running in the same period of time.
how many calories do i burn when i bike?