Trail Running Calendar South East (England) 2026-2027

A 7 hour lap-based time challenge along the River Thames at Wraysbury with flexible self-paced distances from 3 km up to 50 km, signed course, aid stations, medals, goody bags including vegan options, and distance pins for longer efforts.

A guided 30 mile trail run near Guildford on 2 May 2026 that follows parts of the North Downs Way and the Greensand Way. Led by an experienced ultra runner and coach, it includes Leith Hill, a kit list and an end of run alcohol free beer.

A three day series across East Grinstead, Haywards Heath and Burgess Hill offering 10 mile, 10k, mile and fun run distances plus combined marathon and virtual options.

Run Silchester is an annual village trail event offering 2.5, 5 and 7 mile routes that pass a Roman wall, a 12th-century church and woodland. The event raises funds for the Silchester Sports Pavilion Charity and supports a local food pantry..

Experience an off road five mile race through the picturesque North Wessex Downs. Follow woodland tracks and rural footpaths on a course starting in Hurstbourne Tarrant with all proceeds supporting local charities.

A single entry that covers four Centurion 100 mile races between 2 May and 18 October 2026, organised by Centurion Running. The combined entry is full and the minimum age for entry is 20.

A Backyard Ultra on private wildlife trails at Chilton Manor Farm with fields, woodland and a high point at Bugmore Hill Trig Point offering views across the South Downs. The loop returns to an event camp with signage from nearby towns.

Trail races across the South Downs from Lancing Manor Leisure Centre on Sunday 3rd May 2026. Choices include marathon, half marathon and a 5 mile trail run with aid stations and course marshals.

A guided, non-competitive trail run around Box Hill, covering 12.5 miles with about 1000 m of ascent through woodland, heathland and fields. The route is technical in places and led by an experienced guide.

A friendly trail run on Headley Heath near Leatherhead with a two lap 10 km route through open and woodland paths. The undulating course has a small hill on each lap and offers scenic views and bluebells.

A trail festival in Winchester on 4 May 2026 offering four distances from 14 miles to a 50K ultramarathon, fully marked routes, aid stations and parking at Winchester Rugby Club.

Take on the Freddo Mercury Rhapsody Run along a flat riverside towpath at Xcel SPORTS HUB, logging as many 5.3 km laps as you can within a relaxed 7 hour limit. Rock up in a 1.5 hour start window or request a time, with aid stations and opt..

Spring trail races in Harewood Forest featuring 5k, 10k, canicross and a children's fun run on undulating forest and field routes. Pre-registration only; proceeds support local playing fields and school PTA.

A 100-kilometre anticlockwise loop through the Chiltern Hills, the race follows The Ridgeway and local trails with six checkpoints, marked navigation and open GPS tracking. The event is based in Chesham and limited to 250 runners.

A point to point 50 km ultramarathon from Horsham to Brighton seafront on 9 May 2026, featuring multi terrain trails, four feed stations and a 9.5 hour cut off. Individual and two runner relay entries are offered with team prizes.

Goring Gap Trails offers ultramarathon, half marathon and walking distances near Reading on 9 and 10 May 2026. The TRA licensed event includes affiliated and unaffiliated entry options and on site camping.

Inflatable 5K in Guildford on Saturday 9 May 2026 is an inflatable obstacle course at Stoke Park offering 2.5k laps with options of 2.5k, 5k, 10k or 15k and family friendly participation rules.

Test your endurance at Stanmer Park by completing 4.167 miles every hour until only one runner remains. This out and back course offers a personal challenge with support facilities and refreshments for all participants.

This event on the Thames features 10K, half, and marathon distances on scenic riverside paths. Starting from the Wraysbury Skiff Club, the courses use fully marked out-and-back loops. The area near Runnymede offers beautiful countryside and..

Experience the twilight beauty of Ardingly Reservoir during this evening run in West Sussex. Choose between a 5K or 10K distance on an undulating trail course featuring scenic water views and a finisher medal.