Swiss triathlon star Caroline Steffen has rebounded from her disappointing Hawaiian Ironman to dominate the Mandurah 70.3 race in WA.
Denis Chevrot of France won the men's race ahead of his title defence next month at Ironman WA in Busselton.
Steffen, who spends much of the year in Australia, is unbeaten this season over the half-Ironman distance.
She led the field out of the 1.9km swim and was unchallenged throughout the 90km cycle and 21.1km run.
Steffen won in four hours four minutes 50 seconds, well clear of Dutch triathlete Yvonne Van Vlerken's 4:10:14.
Last month, Steffen paid for a buildup plagued by illness when she struggled to ninth at Hawaii after several years of top-five finishes there.
Sunday's win at Mandurah also was a small measure of revenge for Steffen after Van Vlerken passed her in the finishing straight to take second in March at the Ironman Asia-Pacific race in Melbourne.
Laura Siddall of Great Britain was third in 4:12:19.
Chevrot overtook Australian Jake Montgomery late in the run to win in 3:45:39.
Montgomery clocked an impressive 3:46:33 and New Zealand's Terenzo Bozzone was third with 3:47:26.
Retired West Coast defender Beau Waters finished 40th overall and fifth in the 25-29 age group, clocking 4:18:06.
Earlier on Sunday, Australian pair Todd Skipworth and Courtney Gilfillan won the Challenger Forster race in NSW.
Skipworth held off a late challenge from David Mainwaring to win the race, featuring the same distances at Mandurah, in 3:52:29.
Mainwaring took second in 3:57:30 and his housemate Matthew Pellow made it an all-Australian podium with his 3:58:24.
Gilfillan took the lead on the bike and won in 4:28:47 ahead of New Zealand's Gina Crawford, who clocked 4:31:00.
Australian Jessica Mitchell was third in 4:35:14.
Turia Pitt finished in just over six hours, four years after she suffered life-threatening burns while racing at a WA ultra-marathon.
