To celebrate 15 years of the National Cycle Network, our friends at Sustrans are organising a 56-mile MTB ride from Bristol to Cheddar Gorge and back again, on Saturday 11 September. The route will include some quiet roads and cycle paths, but there will also be a fair bit of off-road too.

The ride will use an orienteering type format, where you navigate yourself and get your entry card stamped at four checkpoints. Everyone who collects all four will be entered in a prize draw at the end of the ride. There's also a choice of a shorter 29-mile route. Both routes finish at the Tobacco Factory for a well-earned drink and some restorative cheese. Mmm, cheese...

For full details and online entry, check out the Sustrans website.