Originally Posted by rm -rf

Bikes are a bit "too" efficient, it doesn't burn a lot of calories when riding at a moderate pace.

A good rule of thumb is around 20-25 calories per mile, often closer to 20. (Long climbs and pushing a fast pace burns more of course.) So a 30 mile ride might only be 600 calories.

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I would come home from a fairly fast group ride and eat a lot of food, I was hungry and tired. It's likely that was a net calorie gain!