'Sarmang Dehradun Marathon and Doon Monsoon 10K run are the two major marathons held in the capital city of Uttarakhand, Dehradun. The former has four race categories: Full Marathon, Half Marathon, 10K and 5K and the latter offers a Full Marathon which needs to be covered in six and a half hours. This beautiful city is very well known for its natural parks and relaxing atmosphere. Runners can visit The Robber's Cave, Clement Town, Barkot and the Tibetan Market.