Old Mutual Om Die Dam Marathon

The First Challenging Ultra Marathon of the Year!

The Old Mutual Om Die Dam Marathon, once considered the baby brother of the more prominent Old Mutual Two Oceans Marathon, is consistently voted one of the top national races in the country! Since it was first run in 1991 it has grown into the largest inland ultra-marathon in South Africa, attracting over 10 000 participants each year.

Scenic routes, easy access from Johannesburg and Pretoria and family appeal is only part of what makes this race one of the benchmarks of South Africa, it is also renowned for its superb refreshment stations, with 19 in total on the marathon route. It can be hot in Harties, but organisers know how to look after tired runners. Besides coke and water stations, some also offer bananas, jelly sweets, chocolates, potatoes and other “morale lifters”!

The half marathon and shorter races run mainly around the suburbs of Hartbeespoort and are generally flat, easy and fast. The ultra-marathon, takes runners on a circular loop past landmarks such as over the Dam Wall and under the Arch de Triumph and then past Jasmyn Farm Stall towards Saartijies Nek, the first significant hill to be encountered at approximately 16 kilometres into the race.

A trip to the Hartebeespoort Dam is always a pleasure and the magnificently scenic routes will have you wanting to do a second lap when you reach the finish. Even if you are only supporting or joining in the fun as a spectator, this is one you won’t want to miss!


  • 50 km Ultra Marathon
  • 21 km Half Marathon
  • 10 km Route
  • 5 Km Fun Run
  • After Race Hospitality Area & Club Tents
  • Main Race Prizes
  • Allocated Spectator Areas

Race Details

Dates : Saturday, 17 March 2018

Times : 50 km Ultra Marathon 06h00 to 13h00 cut-off time

              21 km Half Marathon 6h20 with 4hrs to cut-off time

              10 km Route 06h40 with 3hrs to cut-off time

              5 km Fun Run 07h00 with 1.5hrs to cut-off time

Venue : Starting at Hartbeespoort Holiday Resort, 5 Old Rustenburg Road, Hartbeespoort

Entry   : Online entries at https://secure.onreg.com/

Prices  : Ultra Marathon between R200 and R350

              Half Marathon between R130 and R190

              10 Km Route between Free and R90

              5 Km Fun Run between Free and R40

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