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
Marathon Stakes Marathon Stakes The Marathon Stakes, formerly known as the Breeders' Cup Marathon, is a Grade II American Thoroughbred horse race. It is open to horses three years old and up, and contested on dirt at a distance of miles. The race has a purse of US$200,000. The horses carry Set Weights with allowances. The race was originally established in 2008 as part of the annual Breeders' Cup World Championships with its inaugural running at a distance of miles. The inaugural running took place on the second day of the Breeders' Cup on the Pro-Ride synthetic dirt at the 2008 host