Speed skating has been contested at the Winter Olympics since the first edition in Chamonix, France, in 1924. The events are held on a long track, which is a 400-metre double-lane ice rink. Olympic records are recognised by the International Skating Union in the individual distances of 500 m, 1000 m, 1500 m, 3000 m (women only), 5000 m, and (men only) and in the team pursuit. Per round of an event, one Olympic record can be set; when the record is broken more than once in the same round, only the best result is considered to be an Olympic record.