Greater London
Trail Running Calendar near Greater London 2026-2027
Explore the top trail runs near Greater London for 2026-2027! We've gathered 223 exciting trail runs in the area. Check out our detailed list below to find your next local trail run.
December 2026
Saturn Running's 7 hour Time Challenge in Staines upon Thames offers distances from 5 km to ultra along the River Thames, with a finisher medal and a bobble hat.
Map and compass adventure in the Surrey Hills on 5 December 2026, with run and bike options for solo entrants or teams and bike hire available.
Timed lap event at Tilgate Park, Crawley with 5 km laps and distances from 5 km to ultra, a 7 hour limit, and a finisher medal for all participants.
A festive family fundraising run at Frimley Lodge Park with 5K and fun run options, festive items and an Event Village supporting local NHS hospitals.
A 200 mile continuous trail race around the South of England with a 96 hour limit, three major aid stations offering hot food and sleeping, live tracking and mandatory kit checks.
A Christmas timed run along the Thames in Walton on Thames with lap-based distances from a 5.3 km loop up to ultra and medal or no medal entry options.
Essex Vets XC Championships in Epping Forest on 12 December 2026 features a single 8km course with veteran races and an £8 entry fee.
A hilly five mile trail race in Lesnes Abbey Woods on 13 December 2026 in memory of Ray Marshall, with manual timing and a 90 minute cut off.
A festive, informal two-lap Second Sunday 5 on 13 December 2026 at Richardson Evans Memorial Fields, Putney Vale.
Join a festive Christmas run along the flat Jubilee River. Choose your own distance in this 6-hour timed event on a scenic towpath. All finishers receive a bespoke festive medal.
A dawn to dusk trail challenge at Box Hill where runners complete laps of a roughly 10 mile loop with about 2,400 ft ascent per lap; entries include insurance, medical cover and a finisher medal.
A seven hour Time Challenge on a signed Thames riverside loop where participants choose their distance and select a past event medal on finishing.
A looped trail event in Crystal Palace Park where runners complete 2.65 km laps within a 7 hour time limit. Distances range from 5 km to ultra and all participants receive a finishers' medal.
A low key multi-lap half and full marathon along the River Thames in Walton on Thames on 28 December 2026. The UKA certified flat towpath course awards medals to all finishers and has limited places.