The Whaka 100 Mountain Bike Marathon is New Zealand's toughest offroad mountain bike event.

100km of racing through Whakarewarewa Forest with over 70% being on single track.

25km and 50km course options also available.

Start and finish at the Waipa mountain bike carpark off Waipa State Mill Road.

This year the race will be held in Rotorua on the 3rd October 2009.