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.
March 2027
Multi day running series in Walton on Thames offering Ten in Ten and Twelve in Twelve formats with distances from 5 km to ultra, certified flat riverside laps and finishers medals and shirts.
A 7 hour time challenge along the River Thames with flexible lap distances from 3 km to 50 km, medals, distance pins, aid stations and goody bags.
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.
A 25 kilometre canal run in Welwyn Garden City on 20 March 2027, organised by Camino Ultra, with mostly flat tow path terrain, well stocked aid stations and supportive volunteers.
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.
Seven consecutive days of timed running along the River Thames with flexible distances from 3 km up to 50 km, lap-based half, full and ultra options, daily medals and pins, aid stations and goody bags.
April 2027
Time challenge on signed loops beside the River Thames with distances from 3 km to 50 km, medals and pins, goody bags including vegan options, and on-course aid.
A timed Friday run on a flat 5.3 km Thames towpath lap with flexible starts; the £10 charity entry supports Rays of Sunshine and all finishers receive a medal.
An evening 10 km trail run on 22 Apr 2027 with a limited field of 50, a new course provided as GPX and narrative, and self sufficient participation expected.
An untimed inflatable obstacle event in St Albans on a 2.5 km lap with distances from 2.5K to 15K, medals, music zones, 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
Guided 30-mile trail run near Guildford using parts of the North Downs Way and Greensand Way, group-paced with summit climbs and a recommended 22-mile training background.
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.