The world's largest iron distance triathlon with 4500 athletes will feature two of New Zealand's top names at Roth in Germany on Sunday .
Gina Ferguson broke the New Zealand women's iron distance record when she finished third at the Quelle Challenge Roth last year in 8.57:18.
This year she's competing against the world champion Chrissie Wellington of Great Britain, a multiple winner Belinda Granger of Australia and Hungary's Erika Csomor, who was second last year.
Richard Ussher will compete in his third iron distance event off the back of his recent win in Sweden at the Ã re Extreme Challenge with wife Elena.
His toughest opposition is likely to come from the likes of Germany's two-time world champion, Normann Stadler, the Australian national champion, Pete Jacobs, as well as Challenge Wanaka winners Chris McDonald of Australia and Luke Dragstra from Canada.