Comrades Marathon is a 89.9 km (56-mile) ultra-marathon run start in Pietermaritzburg, South Africa and finishes at The Kingsmead Cricket Stadium in Durban. The race distance is subject to change and will be confirmed in the final race instructions. 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 (89 km) starting from Pietermaritzburg. Runners over the age of 20 qualify when they are able to complete an officially recognised marathon (42.2 km) in under five hours. During the event an athlete must also reach five cut-off points in specified times to complete the race.