Trail Running calendar near Brentwood 2026-2027

We have found 506 Trailruns within 80 miles of Brentwood. See below where and when you can find the races.

A 5 km obstacle event at War Memorial Park on 23 May 2027 where participants climb, crawl and slide across mixed grass and path terrain; entrants must be 13 or older and a minimum fundraising target of £50 applies.

A track-based running event at Wodson Park offering distances from 5k to a 6 hour challenge, with chip timing, bespoke medals and aid stations on the track.

Northampton hosts 5 km, 10 km and junior races on Sunday 23 May 2027 at Sixfields Stadium. The start and finish are inside the stadium and the course continues on closed roads around Northampton.

A 10 km trail run at Marlow Rugby Club, part of the Ales & Trails series, on mixed off-road terrain beside the Thames, with medal, pint cup and a free Rebellion drink at the finish. The event was listed as full.

A guided trail half marathon around the Surrey Hills, about 13 miles from St Martha's Hill in Guildford, following parts of the North Downs Way and notable viewpoints. The run is social in format with a guided pace and evening options.

A point to point 50 km trail race along the South Downs Way from Falmer to Eastbourne with four aid stations, GPS tracking and an 11 hour cutoff that allows walkers.

Trail event from Richmond to Brighton offering multiple distances, GPS tracking, covered rest stops, medical support, camping and finishers items.

Trail event at Hyde Hall Farm with a 5.3 km loop and multiple race options up to a 32 hour 100 mile challenge. The event includes an on course aid station, secure parking and finisher medals.

An 86 mile point to point trail race along The Ridgeway from Ivinghoe Beacon to Avebury with GPS tracking, eight checkpoints and a 28 hour time limit.

A 60 km point to point ultramarathon on the Ridgeway National Trail from Ivinghoe Beacon to Ridgeway View Campsite, with about 1000 m of ascent, four checkpoints, open tracking and a 150 runner limit.

A 13.5 mile single loop trail through the South Downs National Park from Helen Garden, Eastbourne, with about 2,000 ft of ascent and mostly trail terrain.

A looped trail event at Wiston Estate offering 10K, half marathon, marathon and 100K on a marked 10K circuit with aid stations and an Event Village.

June 2027

A Star Wars 50th Anniversary weekend on 5 and 6 June 2027 at Caldecotte, Milton Keynes featuring marathon and half marathon races around Caldecotte Lake, unique finisher medals, on-course water and toilets, and time limits for each race.

A 5k obstacle course at Royal Windsor Racecourse with mud obstacles to climb, crawl and slide, mixed tarmac and grass surfaces, staggered wave starts and a minimum age of 13. Earlybird entry prices and a fundraising target apply.

A 5 km obstacle course at Prospect Park in Reading where participants climb, crawl and slide across grassy slopes and woodland. Waves run every 15 minutes and the event is open to people aged 13 and over.

A 5k muddy obstacle course at Willen Lake with staggered wave starts, on-site toilets and parking, blue badge parking nearby, and a fundraising target of £50. The event is not wheelchair accessible.

An evening trail marathon on 5 June 2027 covering 27 miles and 2,500 ft across saltmarsh, towpaths, vineyards and woods with limited field and checkpoint support.

A Backyard Ultra at High Lodge Thetford Forest with 4.167 mile hourly loops, an open-ended main race plus 6 and 12 hour options, chip timing, camping and on-course support.

Backyard Ultra at Chilton Manor Farm on 5 June 2027 features a 6706 m loop run each hour until one runner remains, with weekend camping, on route water stations, event camp facilities and medical support.

A point to point 50 km trail ultramarathon from Rochester to Tonbridge along the River Medway. The predominantly flat, fully marked course features four stocked aid stations, chip timing, live GPS tracking and an athletics track finish.

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