CENTURION, SOUTH AFRICA - AUGUST 25, Rene Kalmer (Front) and Rutendo Nyahora in action during the SPAR Womens 10km Pretoria Challenge from SuperSport Park on August 25, 2012 in Centurion, South Africa Photo by Craig Nieuwenhuizen: Beeld / Gallo Images

Johannesburg – Olympic marathon runners Stephen Mokoka and Rene Kalmer successfully defended their South African Half-marathon titles in Cape Town on Sunday.

Kalmer, who won the Spar Women's 10km Challenge in 34 minutes, 50 seconds (34:50) in Pretoria on Saturday, shrugged off a niggling foot injury to win the women's race in one hour, 14 minutes, 40 seconds (1:14:40), bagging a spectacular weekend double.

A multiple national champion over a wide range of distances on the road and the track, 31-year-old Kalmer held off a challenge from her younger sister, Christine, who finished second in 1:15:23. Nolene Conrad secured third place in 1:16:13.

Mokoka, meanwhile, set a personal best to win the men's race in 1:00.57.

The verstaile 27-year-old edged Lucky Mohale by 11 seconds for the victory.

Mohale took the silver medal in 1:01.08 and Gladwin Mzazi bagged bronze in 1:01.38. – Sapa