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
Skopje Marathon a full marathon, a half marathon and a 5K race, and takes place on 12 May 2013. Skopje Marathon was in the list of Qualifying Marathon Races in 2012 for the Olympic Games in London. It has been a member race of the Association of International Marathons and Distance Races (AIMS) since 2009. The 2015 edition was cancelled due to the 2015 Macedonian protests. The Skopje Marathon became one of the biggest sporting events in Republic of Macedonia in 2012 as more than 3600 runners from more than 36 countries attended. Skopje Marathon The Skopje Marathon () is an annual