Trail Running calendar near London 2026-2027

The Terminator 2026 is a tough but rewarding 12 mile trail race around Pewsey, Wiltshire, mostly off road with muddy climbs and high point views. All finishers receive a unique T shirt and race village treats await.

Enjoy scenic Gatton Park trails with canicross and trail options over 5K and 10K, with medals and dog treats. Chip timed races, onsite parking and post race goodies make for a fun winter run with your canine companion.

Guided 10 km trail runs at Thursley National Nature Reserve in Surrey on 25 February 2026 and 7 July 2026. Flat group routes include a boardwalk section, headtorches for night runs and a car park; cost £16 per person.

Take on scenic 15 km or 10 km routes at Newlands Corner, Guildford on Saturday 28 February 2026 with the G3 Series. Friendly, well organised races and multi entry deals make this a perfect weekend challenge for all abilities.

Guided 30 mile trail run from Harting Down along the South Downs Way, visiting Beacon Hill, Cocking Down and Kingley Vale. Presented as suitable for first time ultra runners, run at a group pace with practical support and route guidance.

Chocothon is a friendly timed lap on a flat 5.3 km riverside towpath, letting you complete as many laps as you can within a seven hour window. Distances from 5 km to ultra, medals and aid stations make it perfect for all abilities.

Marked 10k and Half Marathon trail races from Brixworth Country Park around Pitsford Water. The half marathon visits several local villages and the event offers water stations, first aid cover and medals for finishers.

The High Lodge Half Marathon winds through Thetford Forest on varied trails and sand, offering scenic views and wildlife like fallow deer and wild thyme. Traffic free, manually timed event with finisher medals and podium trophies.

Run the Windsor & Eton 10km on 1 March 2026 for a scenic multi terrain route from Windsor & Eton Brewery along the Thames and Jubilee River. Finishers get a pint cup, medal and free race photos to celebrate your run.

A seven mile self-navigation trail at Waldegraves Holiday Park on 01 Mar 2026. Entry is limited to 150 runners; fees include a £4 bar voucher and results will be posted on essextrailevents.com.

A guided *10 km* trail run from Silent Pool near Guildford, using North Downs Way and Netley Heath paths, led by a qualified guide. Group-paced, two 2026 dates, £16 entry and car parking at the meeting point.

A trail championship at Matterley Basin near Winchester on 4 March 2026, offering 10 km and 20 km races run on 5 km laps with mass starts and on-course water stations.

A one-day event in the Chiltern Hills offering 10 km, 25 km and 50 km routes with marked trails, checkpoints and full medical support, raising funds for Humanity Direct's medical work for children.

Sussex Coastal Trail Run in Eastbourne on 7 March 2026 follows coastal paths by the Seven Sisters and the English Channel, offering 10K, half, marathon and ultra distances on chalk and forest terrain with marked routes.

Thunder Races brings 25 km and 50 km trail runs through the woodland and countryside around Harrold Odell Country Park in Bedford. Enjoy marked routes, aid stations and a finisher medal plus goodies for a memorable spring trail challenge.

Brutal at Chawton on Saturday 7 March takes you through Brick Kiln Farm and Chawton Forest, with mud, water, steep hills and technical trails for a true off road test. Canicross waves welcome dogs for a wild, fun run together.

Run scenic laps along the Thames towpath in Walton on Thames at the Ladybird Run, on flat off road trails with timed entries or a one hour rock up and run start window. Pick 5 km to ultra distances and complete as many laps as you like with..

The Berko 10km will take place in Berkhamsted on Saturday 7 March 2026. You can run 10 kilometers.

Leith Hill Half Marathon is a challenging 13.1 miles trail race across Surrey with about 1,800 feet of ascent and a summit finish at Leith Hill Tower. Enjoy scenic singletrack, a reusable medal, local beer and a full cooked breakfast.

Two country routes from Wellingborough of 26.6 miles and 15.5 miles with checkpoints, snacks and a light meal at the finish. Route descriptions and GPX files are provided in advance.