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
Nottingham Marathon Nottingham Marathon The Nottingham 'Robin Hood' Marathon, is a race in Nottingham, England held every year since 1981. The race today incorporates a half-marathon, and a fun-run, in addition to the full marathon. A corporate relay event is also held in which teams of five runners from local companies and businesses run legs of 2–3 miles on the half-marathon course. The original race started and finished in the Old Market Square, in Nottingham City Centre. From 1982 onwards the race has started and finished from the Victoria Embankment taking in some of Nottingham's most historical and scenic sights, including the