Trail Running calendar near Welwyn 2026-2027

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 50 km point to point trail along the South Downs Way from Falmer to Eastbourne, the race runs mostly on grass trails and tracks, includes four aid stations, live GPS tracking and an 11 hour cutoff, and awards 2 ITRA points.

A multi-distance trek and trail event from Richmond to Brighton on 29-30 May 2027, with covered rest stops, GPS tracking and camping options. Distances include 100 km, 50 km, 25 km and other options.

Farmmageddon at Hyde Hall Farm offers events on a 5.3 km loop from 10k to a 100 mile 32 hour event, with on-course aid, on-site parking and finisher medals or buckles.

An 86 mile point to point trail race along The Ridgeway National Trail from Ivinghoe Beacon to Avebury Stones, with eight checkpoints, GPS tracking, a 28 hour time limit and a 150 runner field.

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 24 hour off road trail event on *5 mile* loops offering Solo, Pair, and Team entries. The site includes camping, parking, caterers, and illuminated routes for night running.

The Grim Reaper is a multi-distance trail event at Grimsthorpe Castle Estate on May 29-30, 2027, using a fully marked 10-mile loop through woodland, limestone tracks and a disused railway. Distances range from 10 miles up to 100 miles and a..

A 13.5 mile single-loop trail through the South Downs National Park, starting and finishing at Helen Garden in Eastbourne. The route follows the South Downs Way via Friston Forest, Seven Sisters and Beachy Head with about 2,000 ft of ascent..

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 near Purleigh, Essex covering 27 miles with coastal, canal, vineyard and forest sections. The race has three checkpoints, mandatory lighting kit and cash prizes including a reward for a new course re..

A Backyard Ultra at High Lodge Thetford Forest where runners repeat a 4.167 mile loop each hour until one remains. Chip timing, on site camping, food vans and optional 6 hour and 12 hour timed entries are available.

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.

At Prospect Park in Reading this Race for Life event offers a 10k run as two laps of the 5k course plus a separate 5k option, with grass and woodland terrain and some steep slopes.

A mixed road and country run around Ousden in Suffolk offering 5k, 10k, half, full and ultra options with loop and out-and-back formats, regular aid stations, onsite parking and bespoke finisher medals.

Park-based 3k and 5k runs at Dunorlan Park with mixed grass and woodland terrain. The event is organised by Cancer Research UK and includes a fundraising pack and a finishers medal.