The Comrades Marathon is the world's oldest and largest ultramarathon run over a distance of approximately 90 km | 56.1 miles between the capital of the Kwazulu-Natal Province of South Africa, Pietermaritzburg, and the coastal city of Durban. Comrades is an institution in South Africa and is recognised around the world for the extreme challenge it presents and more importantly, the camaraderie it fosters between it’s thousands of participants. The race alternates annually between the "up run" from Durban and the "down run" from Pietermaritzburg. 

Entries open on the 1st of September every year and close on the 30th of November or whenever they reach their limit of 20,000 participants.