Parkrun is a community event that takes place each Saturday morning where entrants walk, jog, or run a 5-kilometre course. Events take place at a range of general locations including parks, forests, rivers, lakes, beaches, and nature reserves. The first ever parkrun event took place on 2 October 2004 in Bushy Park, London involving 13 runners. Today more than 3 million people across more than 2,000 locations in 22 countries participate in parkrun each week. Parkrun events are free to enter and are delivered by volunteers.