This year marks 102 years since a group of 34 men who fought together in World War I put their strength to the test by racing between Pietermaritzburg and Durban in honour of their fallen comrades.
Since 1921, at least 300 000 runners have answered the call to be part of the ultimate human race to experience the camaraderie and the tough hills in between.
A documentary, Down: A Comrades Story, streaming on Showmax, celebrates the