Long-distance running confined area. Early tracks were usually on flattened earth or were simply marked areas of grass. The style of running tracks became refined during the 20th century: the oval running tracks were standardised to 400 metres in distance and cinder tracks were replaced by synthetic all-weather running track of asphalt and rubber from the mid-1960s onwards. It was not until the 1912 Stockholm Olympics that the standard long-distance track events of 5000 metres and 10,000 metres were introduced. Long-distance road running competitions are mainly conducted on courses of paved or tarmac roads, although major events often finish on the track
150 metres 150 metres 150 metres is a sprint event in track and field. It is a very rarely contested non-championship and not an IAAF-recognised event. Given the proportion of standard running tracks, the event typically incorporates a bend when held in a track and field stadium, although some especially-built tracks allow the event to take place entirely on a straight. The event was given a high-profile outing in 1997 as an intermediate contest between two 1996 Olympic champions: Donovan Bailey (100 metres) and Michael Johnson (200 metres). Johnson pulled up mid-race, allowing Bailey to win the $1 million prize. This race