Stefan de Bod was the best placed South African in the men's cycling road race at the Tokyo Olympics on Saturday.
He finished in 52nd position while compatriots Nic Dlamini and Ryan Gibbons did not complete the course.
At one point, Dlamini was in the leading group up until about 55km to go but unfortunately fell back in extremely hot and humid conditions out on the course.
Ecuador's Richard Carapaz won gold after timing to perfection a tactical, final descent after a tough 234km course worthy of a mountain stage of the Grand Tour.
Wout van Aert (Belgium) and Tour de France winner Tadej Pogacar (Slovakia) finished in the silver and bronze medal positions.