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.
July 2027
August 2027
Experience a recreation focused obstacle event in Chelmsford featuring multiple distance options and up to 90 giant inflatable obstacles for participants of all abilities.
Timed looped trail at Denbies Wine Estate offering distances from a single 5.3 km loop up to ultramarathon within a seven hour limit, flexible start window and medal options.
A loop based endurance event at Frylands Wood Scout Outdoor Centre where runners complete a four mile loop each hour until one runner remains.
Late August trail event in Windsor offering 10K and half marathon routes through Alexandra Gardens with views of Windsor Castle and support for Brain Research UK.
Experience a scenic 10k trail run through Shoreham Woods in Kent featuring chip timing and a dedicated Canicross category for runners with dogs.
September 2027
Mud Tribe in Brentwood offers muddy obstacle courses of 1.5 km and 5 km with foam and water features, hot wash downs, a finisher medal and family friendly facilities.
Guided 10 km trail run around Silent Pool near Guildford, following parts of the North Downs Way and Netley Heath forest. Sessions run at dusk or at night with headtorches in a led group and a recommended pace of about 10 min per mile.
A multi-distance Thames Path event from Putney Bridge to Henley with rest stops, GPS tracking, camping options and on-course medical and catering support.
A wine themed running event at Denbies Vineyard in Dorking with half marathon, 10K and a free 2km kids run plus wine stations and a post race party.
October 2027
A 100K trail ultramarathon from Chesham around the Chiltern Hills, fully marked with six checkpoints, GPS tracking and a 19 hour time allowance.
A guided 30 mile trail run from St Martha's Hill exploring the Surrey Hills and Box Hill with an experienced ultra runner and coach. Group pace, recommended 22 miles training, cost £55 and an alcohol free beer may be available.
November 2027
Windsor Trail Run on 28 November 2027 features a flat trail through Alexandra Gardens with 10K and half marathon options, timed results and post race goodies.
December 2027
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.
A fully signed 50 km trail ultra in the Surrey Hills on 5 December 2027 with timed results, regular checkpoints and a 10 hour time limit.