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
Comrades Marathon Comrades Marathon The Comrades Marathon is an ultramarathon of approximately 89 km (approx. 55 miles) which is run annually in the KwaZulu-Natal Province of South Africa between the cities of Durban and Pietermaritzburg. It is the world's largest and oldest ultramarathon race. The direction of the race alternates each year between the "up" run (87 km) starting from Durban and the "down" run (now 90.184 km) starting from Pietermaritzburg. The field is capped at 25,000 for 2019. In all but three runnings since 1988, over 10,000 runners have reached the finish within the allowed 11 or 12 hours. With increased