Tour of the Dragon is an annual international mountain bike race organized in Bhutan. Regarded as one of the toughest one day mountain bike race in the world, the event has attracted daring cyclists from across the globe to participate in this competition of which many have failed to complete the race. Determined to either complete or win the race, the competition gets many repeat participants every year.

The race starts from Bumthang district in central Bhutan and finishes in the capital Thimphu covering a total distance of 268 kilometers. Racers will have to cross four major mountain passes ranging from 2800 meters to 3500 meters in elevation. In the ten to fifteen hour journey, racers will experience drastic change in elevation, fight tough Himalayan terrains all the while dealing with the thin mountain air. It will truly test the endurance of any respected cyclist.