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
Many Clouds Chase Many Clouds Chase The Many Clouds Chase is a Grade Two National Hunt steeplechase in Great Britain which is open to horses aged four years or older. It is run at Aintree over a distance of about 3 miles and 1 furlong (3 miles and 210 yards, or 5,020 metres), and during its running there are nineteen fences to be jumped. It is scheduled to take place each year in early December. The race is sponsored by Rewards4Racing and was first run as a Listed race in 2011. It was awarded Grade Two status and renamed in honour of Many