Fast times were recorded across the staggering 3.8 kilometre open water swim, 180km road cycle and, just to top it off, a marathon 42.2km run.

The gruelling race was won by Frenchman Jeremy Jurkiewicz who crossed the finish line in 8:08:16.

Jurkiewicz powered to victory by almost eight minutes, ahead of runner-up Markus Thomschke from Germany.

Bendigo's athletes had strong races, with 30-34-year-old division ironman Jarrod Draper first across the line in 9:46:42.

Draper flew home in the marathon in just 3:25:27.

Strathfieldsaye's Frank Scarce was only three minutes behind Draper in 9:49:34 - set up by a fast swim leg of 1:02:09.

Scarce was the third-quickest in the 55-59-year-old age group.

Strathdale's Russ Tremayne completed the brutal annual event in 10:19:27.

Tremayne, competing in the 40-44-year-olds division, was consistent across the three disciplines.

He came home with a burst to finish the marathon in just under four hours.

Quarry Hill's Ben McDermid was across the line in 10:36:54.

His race was set up by a rapid swim leg of 1:02:01.

Maiden Gully's Justin Lee also tore through the water in 1:08:39. Lee's determination helped him get to the finish line in 11:56:17.

The Busselton Ironman attracts a high-quality field with 40 age group qualifying spots available for the Ironman World Championship in Hawaii.

US$40,000 in prizemoney was on offer for pro athletes at the event, which was one of 32 Ironman events raced worldwide.