Trail Running calendar near Rivenhall 2026-2027

An inflatable obstacle course in Guildford, Surrey on Saturday 9 May 2026 covering 5 km. The organiser says the 2026 edition is bigger and bouncier, and recent bookings include 64 in the past 24 hours.

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.

Nuclear Rush is a muddy obstacle race at the Secret Nuclear Bunker Estate in Essex featuring 6 km with 40 plus obstacles and 12 km with 70 plus obstacles, plus signature features such as the 20 foot Deathslide and multi lane zip wires.

Test your limits at the British OCR Championship in Essex. This 12km+ elite course features over 60 technical obstacles and serves as a qualifying event for both European and World Championships.

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..

A weekend of muddy obstacle races at the Secret Nuclear Bunker Estate in Essex, with distances from 1.5 km to 38+ km, signature obstacles like the Deathslide and zip lines, chip timing and on-site facilities.

A 5 kilometre race at Banham Zoo featuring a lap inside the zoo and full-day zoo entry. The event supports conservation, includes a finisher medal and Race Day Village, and offers discounted spectator tickets for friends and family.

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.

A Pretty Muddy 5k obstacle course at Norfolk Showground featuring climb, crawl and slide elements on a mostly flat route contained within the showground. Participants must be 13 or older and a minimum fundraising target of £50 applies.

A road marathon on scenic low traffic lanes around Halstead, marking its 30th running on 10 May 2026. The event is limited to 500 entries, is part of the Essex Road Running Championships and supports local charities.

Zig Zag Marathon and Half Marathon is on Sunday 10 May 2026 at Suffolk Running Centre in Bury St Edmunds. The marathon follows the measured Kirtling route and the half uses the Windmill route, with aid stations every 10k and a seven hour cu..

Off-road 10k, 5k and junior runs at Milton Creek Country Park on 10 May 2026. The event supports the Oliver Fisher Special Care Baby Trust and includes medals, prizes, pacers and limited free on-site parking.

Trail races at Rathfinny Wine Estate on undulating off road loops with marked routes, aid stations and recycled finisher medals. The carbon neutral event supports the WOLO Foundation and offers single and double loop options.

A self-guided 13-mile run along Letchworth's scenic Greenway trail. This is a run, not a race, due to road crossings. Finishers get a wooden medal and refreshments, with profits supporting a local youth mental health charity.

Explore the beautiful Chiltern Hills on this guided 30km trail running adventure. Enjoy 500m of ascent through woodlands and ridges with professional run leaders and a finishers medal included.

An inclusive UK trail running series offering 1K, 5K, 10K and kids races with free entry for under 16s, held at Dunstable Downs in May and Blaise Castle Estate in October 2026, with activities, food and live music.

Experience a scenic single lap trail race through the bluebell woods of Hampton Estate and Puttenham Common. Enjoy chip timed racing with bespoke medals and onsite refreshments in a beautiful Surrey setting.

Experience a cross country run through the Hertfordshire countryside with 5km and 10km distances. This community event in Little Gaddesden includes junior categories and mini races for children.

A self‑navigated trail event in Thaxted on 10 May 2026 raising funds for Thaxted Windmill restoration. Two route options are offered, 5 miles (8k) and 8.25 miles (13k), with entry fees and a refreshment voucher included.

A multi-terrain 5 kilometre race at West Lodge Farm in Desborough on 13 May 2026, running through fields, woodlands and farm trails. Finishers receive a bespoke medal and a virtual completion option is available; entries close 12 May.