Trail Running calendar near Greater London 2025-2026

Join a guided 30 miles group run along the North Downs and Greensand Way from West Hanger near Guildford, taking in Box Hill, Leith Hill and Holmbury Hill. Intended for experienced trail runners able to sustain about 10 minutes per mile, wi..

Three day Mid Sussex Marathon Weekend in early May offers undulating multi terrain races across East Grinstead, Haywards Heath and Burgess Hill. Enter single town races or combine all three to complete the marathon with virtual entries.

Join Run Silchester on 2 May 2026 for 2.5, 5 and 7 mile trail runs around the Roman wall, ancient woodland and a 12th century church. Family friendly festival atmosphere with stalls, music and proceeds supporting local community causes.

Hit the Cotswolds trails with Tempo Trail Races on Sunday 3 May 2026, featuring distances from 10K up to a 100K ultra. Pick your challenge or try the new 50K option for a weekend of scenic, adventurous running.

Run a scenic woodland course at Culden Faw Estate on 3 May 2026 with solo, pair and team relays plus timed 5K, 10K and the Henley Downhill Time Trial. Expect gentle undulations, a climb before 3 km and a long downhill finish with chip timin..

Take on the Three Forts Challenge across the South Downs with rolling hills and coastal views. Choose marathon, half marathon or 5 mile trail and even bring your dog, with net proceeds supporting local Sussex charities.

Join a guided trail run at Box Hill, Dorking covering 12.5 miles with about 1000 m of ascent through steep, technical woodland and open fields. This noncompetitive group run suits fit trail runners and finishes with an alcohol free beer.

BigWayRound Winchester is a scenic trail run around the Itchen, St Catherine's Hill and the South Downs, offering 14 mile to 50K distances. Timed chip results, fully marked course and a bespoke medal or choose a tree planting instead.

Enjoy spring trails at Harewood Forest in Hampshire with Muddy Runners, choosing from 5 km or 10 km routes across undulating woodland tracks. A friendly, scenic race perfect for trail newcomers and regulars alike.

Tackle the Chiltern Hills 100K on 9 May 2026, a scenic but demanding trail ultramarathon around Chesham with 1800m of climbing. Limited to 250 runners, the marked course features checkpoints, live tracking and a finisher medal.

Run to the Sea Brighton is a scenic 50km point to point ultramarathon from Horsham to Hove Lawns on the Brighton seafront. Enjoy trails, rolling downs and a coastal finish with feed stations and support for solo runners or two person relays..

The Collingbourne Races, held at Crawlboys Farm in Ludgershall, offer a scenic off-road running experience through the beautiful Collingbourne woods. Featuring a half marathon and a 10km race, the course includes bridle paths, woodland trac..

The Goring Gap Trails event, held in Mapledurham near Reading, offers a variety of running and walking challenges, including a 50-mile ultra, a 52K ultra, and a half marathon, alongside walking options of half marathon, full marathon, and a..

Take on the Ridgeway 40 mile walk along ancient chalk downlands from Avebury to Streatley on 9 May 2026. Checkpoints, refreshment stops and a finishers cloth badge make for a rewarding day out for seasoned walkers and adventurous newcomers.

Celebrate the 30th Halstead & Essex Marathon in May 2026, a scenic road race through rolling hills, woods and farmland around Halstead. Expect low traffic roads and friendly club support for a classic Essex running challenge.

Shires and Spires is a scenic loop in Northamptonshire offering distances from 10K to an ultra 50K, running past grand country houses and village trails. Expect mixed terrain, GPX navigation and a friendly village hub start and finish.

Run the Zig Zag Marathon or Half at Suffolk Running Centre, Bury St Edmunds, over scenic mildly undulating road routes. Limited to 300 entrants, with on course aid and a bespoke finisher medal.

Tackle the Oliver Fisher 10k, 5k or junior run on the off road trail at Milton Creek for a scenic Kent run, with a bespoke medal and photos. Proceeds support the Oliver Fisher Special Care Baby Trust and Medway neonatal unit.

Run through the scenic Rathfinny Wine Estate vineyard on a challenging off road 10.7 km loop or double it for a 21.4 km half marathon. Carbon neutral event supporting the WOLO Foundation with free charity places and recycled medals.

Take on the Greenway Challenge in Letchworth Garden City: a self guided 13 mile clockwise run starting and finishing at Standalone Farm. Enjoy marshalled crossings, a wooden medal, and cake at the finish while supporting Headway Herts.