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
Mount Marathon Race summit. It was the first presumed fatality in the history of the race, which normally produces numerous injuries. Mount Marathon Race The Mount Marathon Race is a mountain race that is run every Fourth of July in Seward, Alaska. The race begins downtown, at Fourth and Adams, in front of the First National Bank Alaska, and ends a block south of where it began, at Fourth and Washington. The halfway point is a stone marker atop Mount Marathon, 2974 feet (906 m) above sea level, and a mile and a half from the finish line. The total race course distance