Entering a 10K is a popular form of running competition. It is a 10 kilometer (6.2 mile) race that is usually held on roads or trails. The event is open to both professional and amateur runners, and is often used as a way to raise money for charities. Many 10K races are organized by local running clubs or charities, and the entry fees are often used to fund the event. The winner of the race is usually awarded a prize, such as a trophy or cash prize.