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
Hansons-Brooks Distance Project Marathon, with a time of 2:39:54. Hansons-Brooks Distance Project The Hansons-Brooks Distance project is an Olympic development program for post-collegiate distance runners. It has produced a number of notable professional runners. It is located in Rochester Hills, Michigan. The project's first Olympian was Brian Sell at the 2008 Beijing Olympiad. The most recent success is that of Desiree Davila who finished second in the 2012 Olympic Marathon Trials in Houston, TX, January 14, 2012. In August 2016, Davila placed 7th in the Olympic Marathon in Rio de Janeiro. On April 16, 2018, Desiree Linden was the first American woman in