London
Trail Running Calendar near London 2026-2027
Explore the top trail runs near London for 2026-2027! We've gathered 197 exciting trail runs in the area. Check out our detailed list below to find your next local trail run.
December 2026
Trail 5K and 10K at Tewinbury, Hertfordshire, on undulating dirt, grass and woodland trails with marshals, chip timing and an aid station.
A hilly woodland trail race of 10 km around Hughenden Manor near High Wycombe, fully marked with a water stop at 5.3 km and a GPX route available.
Timed Thames towpath run where participants choose lap distances on a 5.3 km out and back course and entry supports Rays of Sunshine Children's Charity.
A guided 12.5 mile trail run around Box Hill that gains about 1000 metres of elevation across woodland, heathland and open fields. Group pace with technical climbs and scrambling and a chance of an alcohol free beer at the finish.
Christmas trail event in Aldbury supporting the Hospice of St Francis with a 4 km family walk and an 8 km guided run, mince pie and fancy dress prize.
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 200 mile continuous winter trail adventure forming a giant loop across the south of England with a 96 hour time limit and 22500 feet of elevation.
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.
Mince Pi Run on 13 December 2026 at Shalford Park, Guildford offers looped offroad races from 3.14 to 31.4 miles, a Pi marathon option and a one mile fun run shaped like the Pi symbol. The course runs along the water and results are posted online.
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.
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 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.
January 2027
A 10.000 km trail race around Box Hill with steep climbs and scenic views, registration and parking at Denbies Vineyard. The event includes a kids fun run and a ladies race and uses a B Course around Denbies if Box Hill is unavailable.