Russian twins Elena and Olesya Nurgalieva were robbed of their belongings at the 2011 Comrades Marathon on Sunday.
The sisters, who finished first and second in the ladies race, were robbed of all their gear at the second water point.
Their team vehicle was parked near the refreshment station for around 15 minutes while the back-up team provided the sisters with drinks.
Three kit bags were stolen from the vehicle. Two of the bags belonged to the sisters and the third bag was their team manager's.