The simple equation, when it comes to weight loss, is ‘calories out must exceed calories in’. So, you need to burn more calories than you consume to lose weight. Cycling burns between 400-1000 calories an hour, depending on intensity and rider weight. Of course, there are other factors: the make-up of the calories you consume affects the frequency of your refueling, as does the quality of your sleep and the amount of time spent in burning calories will be influenced by how much you enjoy your chosen activity. Assuming you enjoy cycling, you’ll be burning calories. And when you eat well, you should lose weight.