The cross-country event is the only Olympic Games mountain bike discipline and this race will be tomorrow at the Redwood Memorial Grove on Long Mile Road.
Two female New Zealanders are vying for Olympic selection this year, Karen Hanlen from Whakatane, and Rosara Joseph from Christchurch. If they beat their Australian counterparts, they might both be London-bound, Donaldson said.
He tipped that other key competitors to watch out for were Rotorua's Dirk Peters, the 2012 elite men's national champion, and Lewis Hamilton who is the under-19 downhill champion.
Rotorua has hosted the Oceania championships twice before, in 2004 and 2006.
The event alternates across the Tasman each year but Rotorua is hoping to be the sole New Zealand host in future because of the superb trails and facilities.
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