Onepu Community Park Care Group member Heidi Wana said the tracks were easier going for learner mountain bikers.
"It is a real family and beginner rider-oriented track. People shouldn't be intimidated going in there - that's what I like about it."
The costs for the fundraiser are $5 for a child under 13, $15 for an adult and $30 for a family.
A Fun Cycle Ride will also be taking place as a fundraiser for Hanlen just down the road at a cost of $20 per rider.
For more information on the fundraiser, contact Bill Clark on (07) 322 8401.
For information about the Fun Cycle Ride, contact Kevin McComb on (07) 308 7112.