London
Trail Running Calendar near London 2026-2027
Explore the top trail runs near London for 2026-2027! We've gathered 194 exciting trail runs in the area. Check out our detailed list below to find your next local trail run.
March 2027
Looped trail and road races near Chalfont St Peter offering 7K and 10K loops with distance choices up to ultramarathons plus aid stations and medical support.
A guided trail half marathon around the Surrey Hills, about 13 miles from St Martha's Hill in Guildford, following parts of the North Downs Way and notable viewpoints. The run is social in format with a guided pace and evening options.
Seven consecutive days of timed running on certified out and back routes along the River Thames in Walton on Thames. Distances from 5 km to ultra are available and finishers earn daily mementos plus a seven day lantern medal set.
April 2027
Inflatable obstacle course event in St Albans on 24 April 2027 with 2.5 km laps and distance options from 2.5 km to 15 km, family friendly rules and on site facilities.
Timed laps at Tilgate Park on 24 April 2027 offering distances from 5 km to ultra with medal and no medal entry options.
An alternative to the London Marathon at Walton on Thames featuring a UKA certified 3.28 mile lap. Options include full and half marathon or a seven hour timed event, with a 150 mm finish medal for participants.
May 2027
A point to point 100 mile trail race along the Thames from Richmond to Oxford on 1 May 2027 with a 30 hour limit and multiple aid stations.
A guided 30 mile trail run from West Hanger, Guildford, combining North Downs Way and Greensand Way with on-route coaching and group pacing.
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 two day, two person self supported navigation event at Newlands Corner with camping, maps and a points based route across the Surrey Hills.
Muddy obstacle races at the Secret Nuclear Bunker Estate in Essex with 6 km (40+ obstacles) or 12 km (70+), featuring a 20 foot Deathslide and zip lines.
Inflatable 5K in Guildford on 8 May 2027 offers lap-based inflatable obstacle distances from 2.5k to 15k, music zones, water stations and finisher medals.
A guided 30 km trail run through the Chiltern Hills with technique instruction, checkpoints, refreshments and a finisher's medal near Tring Station.
Inflatable 5K at Brands Hatch offers laps of 2.5 km with giant inflatable obstacles, multiple distance options, music zones, finisher medals and on course hydration.
A multi-day running festival at Hackney Marshes featuring a 21.1 km half marathon, 5K and 10K runs, an off-road trail and a free two-day festival.