Metrication in the United States traditional mile-based lengths. In the Olympics, athletes run 1500 meters, not 1600 meters. Running races in the U.S. are usually run in metric distances (e.g., the 100 metres dash or the 5K run), although the mile distance remains popular. But even 5 and 10 kilometer races most often have mile markers on the course, and no kilometer markers. Long-distance races are often measured in kilometers, although exceptions exist (generally 10 mile races). The marathon is referred to as a 26.219-mile race (the official marathon standard distance originally being in English units — 26 miles, 385 yards) rather than 42.195 km.
Athletics at the 1920 Summer Olympics – Men's marathon Athletics at the 1920 Summer Olympics – Men's marathon The men's marathon event was part of the track and field athletics programme at the 1920 Summer Olympics. The distance of this race was 42.75 kilometres. The competition was held on Sunday, 22 August 1920. 48 runners from 17 nations competed. The weather during the race has been described as "cool". An Associated Press report described the weather as "cold and showery", but "fine running weather for the marathoners". These were the standing world and Olympic records (in hours) prior to the 1920 Summer Olympics. "(*)" Distance was 40.2 kilometres Hannes