The Whaka100 Mountain Bike Marathon is known as one of the toughest mountain bike marathons in the Southern Hemisphere. This year, there are more than 1400 people travelling from 15 countries to race across the event's distances, including the Rotorua Isuzu Shoot Out Time Trial on Saturday and the 100km, 50km, 25km, 10km and kids 5.5km events on Sunday. Kristin Macfarlane looks at the top contenders of this year's Whaka100.

There has been a 19.5 per cent growth in the event this year, with a 73 per cent increase in female riders. 93.5 percent of people are travelling from outside

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