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
Haile Gebrselassie needed a sub-4-minute final 1,600 metres for the record. With one lap to go and in great pain, Haile took off, recording a final lap of 56.77 seconds and a final 1,600 metres of 3:59.36 (= 4:00.96-mile) to race to a 12:39.36 world record. In 1999, Haile starred as himself in the movie "Endurance". The film chronicled his quest to win Olympic gold in the 10,000 metres in Atlanta. On the track, he won a 1500/3000 metres double at the World Indoor Track Championships, defended his Outdoor World Track Championships 10,000 metres title, and remained undefeated in all his races