Trail Running calendar near Hertfordshire 2026-2027

A non timed inflatable obstacle event at Kempton Park Racecourse in Sunbury on Thames, Surrey. Choose from 2.5k, 5k, 10k or 15k laps with music zones, a finisher medal, on course water and event photography.

Camino Ultra's Epping Forest 50 KM on 3 October 2026 is a 50 km ultramarathon in the Epping Forest area of London, listed at Capel Road E12 5DB. It is part of Camino Ultra's 2026 event programme.

A 25 km EcoTrail run in Bell Common, Epping on 3 October 2026, presented as part of a London based ultramarathon event series.

Night trail races on the South Downs around Plumpton Racecourse begin at dusk and run into darkness, with 50 km, half marathon and 20 mile options. The course is fully marked and supported with aid stations and marshals.

Trail running at Queen Elizabeth Country Park on 3 October 2026 with five distances from 5 km to 51 km, routes on the South Downs Way through chalk downs, woodlands and ridgeways, and outposts on the longer courses for top-ups.

A tenth anniversary five mile chip timed cross country and Canicross event in the Upper Wreake valley with village hall race HQ, parking on Church Field, prize categories and a commemorative wooden medal for finishers.

A guided 30 mile trail run from St Martha's Hill along the North Downs Way, passing Denbies and Box Hill, led by an experienced ultra runner at a social group pace with kit support and pre-run information.

Wild Run Cotswolds showcases rugged off road trails on a private estate with fully marked routes, chip timing and a family friendly supporter zone. Entries are limited to 600; choose 10K, half, marathon or the six hour 360 challenge.

Scenic out and back races along the Thames Path from Petersham & Ham Sea Scouts HQ to Barnes, offered as 10 km, half marathon and marathon options with staffed checkpoints and medical cover.

A Thames Valley LDWA challenge with new 25 km, 40 km and 50 km routes around Hambleden and Stonor, starting and finishing in Marlow. Entry is limited to 150 and fees include checkpoint food and a badge.

Multi-terrain 10 km and 5 km runs around Thompson, Norfolk, with bespoke medals for all and trophies for top finishers. Proceeds support the Thompson Millennium Green Charitable Trust.

A 50 mile coastal ultramarathon along the Essex saltmarshes, starting at South Woodham Ferrers Rugby Club and finishing at Maldon Promenade Park. Fully supported with aid stations, GPX route files, a shuttle option and a 15 hour cut off.

Experience a scenic multi terrain race through East Grinstead dedicated to local charities. This friendly event features a flat course along bridleways and residential roads with chip timing and a sustainable finisher medal.

Timed trail event in the Forest of Bere using a 3.28 mile out and back lap with distances from 5 km to ultra. Aid station offers sweet and savoury food including potatoes and vegan options; 20% of proceeds support Forestry England.

A RunForestRun organised in-person event at RAF Greenham Common offering a half marathon and a 10 km race on 4 October 2026, with tickets priced from £25.63 and a no refunds policy.

A flexible 6-hour timed run along the flat Jubilee River towpath. Run one 5.24-mile lap or see how many you can complete. The scenic route passes through countryside with views towards Windsor Castle.

A six hour trail event at Sence Valley Forestry Park on a **3.3-mile** hilly loop; participants complete as many laps as they can within the time limit. Canicross and rucking are permitted, and entrants may choose a medal or a tree-planting..

A lap based Friday timed run on the Thames towpath offering distances from a single 3.28 mile lap up to ultra distances, with the ten pound charity entry supporting Rays of Sunshine and a special double sided medal.

Looped trail event near Maidstone through the Kent Downs with 50 km, 25 km and 10 km options. The route is fully signed and supported with covered rest stops, medical teams, GPS tracking and weekend camping at basecamp.

A backyard ultra at Turvey House where runners repeat a 4.167 miles loop each hour; solo and paired entries are available, with 8 hour and 7 hour capped options and chip timing.