Road running

Road running is the sport of running on a measured course over an established road (as opposed to track and field and cross country running). These events are usually classified as long-distance according to athleticsterminology, with races typically ranging from 5 kilometers to 42.2 kilometers in the marathon. They may involve large numbers of runners or wheelchairentrants. The four most common IAAF recognized distances for "road running" events are 5K runs, 10K runs, half marathons and marathons.