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
2014 Boston Marathon 2014 Boston Marathon The 2014 Boston Marathon took place in Boston, Massachusetts, on Monday, April 21 (Patriots' Day). It was the 118th edition of the mass-participation marathon. The race is organized by the Boston Athletic Association. On account of the 2013 Boston Marathon bombings, extra security measures were implemented. The 2014 Marathon had about 36,000 registered participants, second only to the 1996 race in number of entries. The "Boston Globe" reported that over a million people were expected to line the marathon route to watch the race, twice the number who attend during a typical year. Meb Keflezighi won the