The whole school celebrated bikes on the Go By Bike Day, as well as the opening of the off-road cycle training circuit.
Casey King from South Star Trails gave a demonstration of how to ride the pump track, using gravity to get momentum by shifting their body weight.
King, who has been mountain biking for 25 years, also gave the children guidelines for riding the track safely, and helped with a few running repairs.
Year 2 pupil Drew Brown was the first to brave the pump track but each rider got to have a go.
Bike Day also included a grand procession, the best dressed bike competition, sprints and long distance races, and a sausage sizzle to refuel.
The day was organised and run by senior pupils and Year 1 student Jackson Munns said it was "the best day ever".
The school is having an official community opening for the track on April 7 with all riders and their families invited to visit the track and enjoy food stalls and a car boot sale.
Planning, fundraising and construction of the Waikite Valley School pump track has taken more than two years.
The bulk of the funding came from the Infinity Foundation, while contractors from Central Earthmovers and Cooks Contractors built the track over the summer holidays.
Pumice and fill was donated from a neighbouring farm to build the track.
- Supplied by Waikite Valley School