Trail Running calendar near Brentwood 2026-2027

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..

Conquer the mud at the Secret Nuclear Bunker Estate with courses ranging from 1.5 km to 38 km. Experience signature obstacles like the Deathslide and zip lines in this award winning Essex event.

Experience a flat 5k run through scenic parkland and Norfolk's largest zoo. Run past giraffes and penguins before enjoying full day zoo access and a unique finisher medal.

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.

Celebrate the 30th anniversary of this award winning marathon through the scenic rolling hills and hidden back roads of North Essex. This well supported event features a community focused atmosphere and low traffic rural course.

Experience a unique multi terrain race through the historic Northamptonshire countryside starting in Naseby. Choose from five distances ranging from a 10K road race to a 35 mile ultra marathon with rotating course directions each year.

Experience a scenic road race through the undulating Suffolk countryside with marathon and half marathon options. This measured course features quiet roads and local aid stations for a rewarding running experience.

Experience a scenic off-road trail run at Milton Creek Country Park while supporting neonatal care. This event features 10K and 5K distances plus a Junior Run, complete with bespoke medals and a friendly atmosphere.

Experience a carbon neutral trail run through the beautiful vines of the Rathfinny Wine Estate. Choose between a 10.7 km or 21.4 km hilly loop with views of the South Downs National Park.

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.

Experience a scenic trail run through the South Downs with dedicated junior races for primary and secondary school ages. Participants enjoy hilly routes and a fast descent to the finish at the Cadence Cycle Club Café.

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.

Experience an inclusive trail running festival at Dunstable Downs featuring distances from 1km to 10km. Enjoy a vibrant event village with live music, food, and family activities in a stunning landscape.

Nuclear Fit is a dynamic 6 km outdoor challenge combining trail running with six functional fitness stations like tyre flips and sled pulls. Compete individually or in doubles at this festival style event in Essex.

Hairy Legs is a cross-country charity event for all ages, held on a scenic, hilly woodland course. Distances are based on unmeasured loops, and there are solo, relay, and shorter youth options. Fancy dress is encouraged, with prizes and a f..

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.

Enjoy a scenic trail run or walk through the village of East Hendred on an undulating 5k course. Kids can also join the fun with a 1k obstacle run around the sportsground.

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.

Experience a unique multi terrain 5k run through the fields and nature trails of West Lodge Farm Park. Watch for local animals as you navigate this rural course and earn a bespoke finisher medal.