A post-mortem carried out on Midmar Mile swimmer Herman “Thabo” van Straten, who died competing in the race on February 8, has shown he drowned.
Police spokesman Captain Lolly Moodley said on Thursday there were no injuries to his body.
Van Straten, a 43-year-old businessman from Joburg, disappeared while swimming in the race’s business relay event two weeks ago.
His body surfaced about 800m from the start of the 1 600m race late last week.
This after a six-day search by the police search and rescue team and Ezemvelo KwaZulu-Natal Wildlife.
Van Straten was said to be extremely fit and had trained extensively. He completed last year’s swim in 34 minutes.
His death has seen the safety of the race brought into question.