Trail Running calendar near Amersham 2026-2027

A laps based timed run at Ardingly Reservoir offering multiple distances, chip timing, an aid station and a donut shaped finisher's medal.

Two self-navigation trail races in Chelmsford on 23 August 2026: the hilly Admiral McHilly Trail of about 16 miles and the flatter Chelmer Trail of about 6 miles, with written route instructions and no course markings.

Guided group trail run of 10 km through High Lodge in Thetford Forest, led at a conversational pace with groups based on ability. Mostly flat woodland terrain, trail shoes recommended; parking costs £3 and the entry fee is £12.50.

A last man standing backyard ultra on a 4.167 mile loop in the grounds of Gosfield School, Essex. Runners repeat the loop on the hour until one remains; the event includes camping, showers, a small aid station and a £150 winner prize.

London Backyard Ultra at Frylands Wood Scout Outdoor Centre has runners complete a four mile loop each hour until one remains, with medals, showers and refreshments.

An obstacle mud run on a permanent assault course near Dorking, Surrey, offering 5 km and 10 km options, multiple laps, and entries for solo runners, teams and charities. The course includes mud, water, walls and climbing obstacles.

30 August 2026 in Alexandra Gardens Windsor offers 10K and half marathon routes with views of Windsor Castle. The event includes chip timing, free race photos and an event village.

A chip timed, multi terrain flat 10 km race around Pershore that starts at Pershore Leisure Centre and finishes in Abbey Park. Entry is online only, limited to 325 places and includes a medal, water and a plum for finishers.

A 15-mile trail race near Danbury on 30/08/2026 featuring 1600 ft+ of ascent, technical singletrack, locally made trophies and cash prizes including a course-record bonus.

Two lap 5 km around Hugglescote Grange on 30 August 2026, walking children and dog friendly with limited parking and a medal for participants.

A mixed trail and road out and back race from Woldingham School. The half is one 13.1 mile lap and the full is two laps, with notable climbs, varied scenery and on course aid stations and goody bags.

A chip-timed 10 km trail race through Shoreham Woods on 30 August 2026, with scenic but challenging sections and entry donations to the woods.

MacTuffX Bedford on 30 August 2026 combines ten Xercises with repeated 400 m or 800 m runs across solo, doubles and five-person relay formats.

Day nine of the Duck n Run Totally Quackers series on 30 August 2026 in Walton on Thames features timed laps on a flat riverside out and back course, with distances from a single 3.28 mile lap up to an ultra within seven hours.

Run Winchcombe at Sudeley Castle on 30 August 2026 offers 1k, 5k and 10k routes through castle grounds and up to Belas Knap with medals and finishers' sausages.

Charity walking and running event on 30 Aug 2026 with approx 9.5 and 4.5 mile narrative-route courses, unmarked and hosted by Mid Essex Casuals.

A self-navigated trail event in Felsted on 31 Aug 2026 offering approx 10 miles or 10 km courses, with written route instructions and on-site race HQ at The Chequers.

A sunset trail event at Ickworth Park offering 5K and 10K routes across limestone paths, woodland and meadows. The 10K is chip timed, all finishers receive a medal and the event operates as cupless with water refill points.

A mixed terrain trail along the Thames at Remenham Farm in Henley on Thames offering a half marathon, 10K and a junior race, with chip timed results, a themed medal and free race photos.

A multi-distance trek and trail event along the South Downs Way from Eastbourne to Arundel with scenic sections including Beachy Head and the Seven Sisters. Distances of 100 km, 50 km and 25 km are supported with rest stops, medical teams,..