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
Short track speed skating at the 2018 Winter Olympics – Men's 1000 metres competitors, which resulted in the fall of both Lim Hyo-jun and Seo Yi-ra. The two remaining contenders, Girard and Krueger, became gold and silver medalists. Liu Shaolin was disqualified, and Seo Yi-ra won the bronze medal by standing after the fall and crossing the finish line first. Prior to this competition, the existing world and Olympic records were as follows. One Olympic record was set during the competition. The final was held on 17 February 2018 at 21:24. Short track speed skating at the 2018 Winter Olympics – Men's 1000 metres The men's 1000 metres in short track speed skating