Long-distance running only the placing is of importance. Other less popular variants such as fell running, trail running, mountain running and tower running combine the challenge of distance with a significant incline or change of elevation as part of the course. Multisport races frequently include endurance running. Triathlon, as defined by the International Triathlon Union, may feature running sections ranging from five kilometres (3.1 mi) to the marathon distance (42.195 kilometres, or 26 miles and 385 yards), depending on the race type. The related sport of duathlon is a combination of cycling and distance running. Previous versions of the modern pentathlon incorporated
Athletics at the 1908 Summer Olympics – Men's marathon (in hours) prior to the 1908 Summer Olympics. "(*)" distance 40.0 km "(**)" distance 41.86 km Johnny Hayes set a new Olympic record with 2:55:18.4 hours. 27 runners finished the marathon legally, though Dorando Pietri's (disqualified) performance was perhaps the most applauded; his finishing time was 2:54:46.4 hours, half a minute ahead of the winner. The dramatic finish of the 1908 Olympic marathon led to worldwide marathon fever. In a postcard sent at the time, an American spectator said he had "just seen the greatest race of the century." Since Pietri himself had not been responsible for his disqualification Queen