The official distance of a half marathon is 13.1 miles, or approximately 21.1 kilometers. This distance is half that of a full marathon, which is 26.2 miles. Half marathons have gained popularity as an accessible challenge for runners, providing a balance between the intensity of a full marathon and the commitment required for shorter races. Many athletes use half marathons as stepping stones toward longer races or as standalone events. These races often attract a diverse range of participants, from beginners to seasoned runners, making them a significant part of the running community.