Stephen Kiprotich is a Ugandan long-distance runner. He is an Olympic marathon champion, having won the gold medal at the 2012 London Olympics. Kiprotich also won a gold at the 2013 World Championships in Athletics. After Ethiopia's Gezahegne Abera, he is the second person to follow an Olympic marathon title with a world championship gold medal for the same event.

The marathon is a long-distance foot race with a distance of 42.195 km, usually run as a road race, but the distance can be covered on trail routes. The marathon can be completed by running or with a run/walk strategy. There are also wheelchair divisions. More than 800 marathons are held throughout the world each year, with the vast majority of competitors being recreational athletes, as larger marathons can have tens of thousands of participants.