There's a track for every ability on two wheels, and great scenery too.
1. Woodhill
New Zealand's most popular commercial mountain bike park offers forgiving sandy trails - and some spectacular obstacles to navigate - to riders of all abilities in its pine forest setting. It has more than 100km of trails, with more in the works all the time. So even when the carpark is heaving, it's rarely crowded out on the tracks. Signposted off SH16 between Kumeu and Helensville, Woodhill has rental bikes, a pro shop and a coffee stand on the weekends. See bikepark.co.nz
2. Riverhead Forest
Its sometimes gnarly - and, in winter, swampy - trails offer more challenges than nearby Woodhill and navigating the forest is all part of the fun. Even a sedate plod on its gravel roads can make for a pleasant knobbly-tyred outing.