The weather is set to have a say in tomorrow's New Zealand Ironman in Taupo with rain and strong winds forecast for the 3.8km swim, 180km bike and 42km run.
Bad weather prevented a swim in 2006 while last year's race was held in wet conditions.
Cameron Brown picked up his 10th title last year but his time was one of his slowest.
Brown says the weather plays a big part in the race and result.... with temperatures affecting athletes while the wind and wet slow the bike ride down.
Fellow New Zealander Jo Lawn will be attempting to win her 8th women's title tomorrow.
16 hundred athletes are taking part tomorrow.