Phoenix Fridays

Trail races from 8 km up to a 50 km ultra around Princes Risborough, using ancient beech woods, chalk downs and Ridgeway sections with marked routes and fuel outposts.

Enjoy a flexible timed running event along the flat River Thames towpath. Choose your distance from 5km to an ultra marathon and earn a bespoke spinning medal on this fast riverside course.

A muddy 5k obstacle event at Beckenham Place Park with climbing, crawling and sliding on a grassy, undulating course. Waves start every 15 minutes; participants must be 13 or older and fundraising supports Cancer Research UK.

A 7-mile multi-terrain race through Knole Park with a chip-timed 3.5 km junior run for ages 9 to 15. Profits support The Running Charity and the event includes medals, free photos and prizes for top finishers.