10K run

The 10K run is a long-distance road running competition over a distance of ten kilometers (6.2 miles). Also referred to as the 10K road race, 10 km, or simply 10K, it is one of the most common types of road running event, alongside the half marathon and marathon. It is usually distinguished from the 10,000 metres track running event by stating the distance in kilometers, rather than meters.

As one of the shortest common road distances, many 10K races attract high levels of public participation. Among the largest 10K races, the Peachtree Road Race in Atlanta, United States had over 55,000 participants in 2011 while the Vancouver Sun Run and Bolder Boulder both had close to 50,000 runners. The popularity of 10K races lies in the fact that, for most adults, the 10K distance is long enough to represent a challenge but short enough to remain accessible for an untrained runner.

Most popular 10K races are an annual fixture in a city or area and typically incorporate an element of charity running, where participants raise funds for a cause based upon their completion of the course. Members of the public may take part in the races as a competition or simply for pleasure as a fun run. Some races also allow wheelchair racers to enter. Traditional New Year's Day races in Europe (Silvesterläuf) are often held over 10K.