Trail Running calendar near Semington 2026-2027

A timed riverside event on a 5.3 km out and back Thames course where runners choose how many laps to complete within a seven hour limit. Ten pound entry supports the Rays of Sunshine charity and a double sided medal is awarded.

A 40 mile coastal ultra on 6 June 2026 from Porthcawl to Lavernock Point along the Wales Coast Path, featuring beaches, cliffs and Ogmore Castle, with three staffed checkpoints and no formal time limit.

Trail races in the Bannau Brycheiniog (Brecon Beacons) offering Marathon and Half Marathon distances plus bergen versions with a 45 lb pack. Routes run on mountain trails with substantial ascent and finishers receive medals and mugs of tea.

A 24-hour relay at Wasing Park, Reading on 6–7 June 2026 with Solo, Pair, and Team entries on an 8 km trail lap, event camping and an event village, plus charity entry options and tiered team pricing.

Backyard Ultra at Chilton Manor Farm in Chilton Candover is a private, sold out backyard ultra on a 6.706 km loop around Godsfield Copse. Runners repeat a 4.16666 mile lap each hour until only one runner completes the next lap.

The ONER is an 85-mile (circa 140 km) continuous coastal ultramarathon along the Jurassic Coast with a 30-hour cutoff. The route runs from near Charmouth to Shell Bay, Studland, and includes a full circumnavigation of Portland.

Run laps through Denbies Wine Estate in the Fire Horse Run, a timed off road challenge on an undulating 5.3 km loop with distances from 5 km to ultra. Pick as many laps as you like within a seven hour window for a flexible, scenic race day.

A 12-hour backyard ultramarathon at the Bakehouse in Bristol on 6 June 2026 where one lap is run each hour; participants can complete between one and twelve laps and choose from 3 km to 6 km loops, with proceeds supporting Andy's Man Club.

Trail running and rucking in the Mendip Hills near Winscombe with **8 km** and **14 km** routes, supplied GORUCK Rucker backpacks for ruck categories, finisher medals or patches and podium prizes for Pro categories.

A 5k obstacle course at Cassiobury Park where participants climb, crawl and slide across a largely flat, mixed-terrain route. The event supports fundraising for cancer research and includes a medal, refreshment facilities and on-course assi..

A muddy 5 km obstacle course at Willen Lake in Milton Keynes with timed waves, a minimum fundraising target and on-site facilities. Open to participants aged 13 and over and organised by Cancer Research UK.

A 5k muddy obstacle event at Prospect Park, Reading where participants climb, crawl and slide over grass, slopes and woodland. Organised by Cancer Research UK, the event includes on-course marshals, a fundraising target and a finishers meda..

Fun Run 2026 at Bruern Farm Estate features trail routes of 2.5 km, 5 km and 5 miles with specific age accompaniment rules, participant medals and post race refreshments at the Bruern Farm Cafe.

A 24 hour loop challenge in Worcestershire where each hour participants complete a 6.8 km circuit split into three laps. Individual and team relay categories are available, with mandatory night laps, timing, basecamp support and finisher it..

A 13.1 mile coastal half marathon around the Isle of Portland on 6 June 2026, featuring exposed clifftop sections and mixed terrain. The event includes GPS tracking, a checkpoint at Portland Bill and compulsory safety kit.

Races in Bath that run through the Devonshire and Combe Down tunnels, offering distances from 500 m Colourburst runs up to a 50 km ultra, with a mix of tarmac, trail and city routes and UK Athletics affiliation.

Water themed trail running on the Isle of Purbeck with four single lap distances from half marathon to 54k. Routes run along coastal cliffs and Purbeck hills and include well stocked aid stations and GPX navigation advice.

Trail running at Wendover Woods on 7 June 2026 offering a half marathon, a 10k and a junior run on hilly forest trails with route maps, an on site cafe and spectator attractions.

Coombe Hill Fell Race in Wendover on 7 June 2026 is a 7 km BS Category fell run with a steep climb and 220 m of ascent. Registration is at the Shoulder of Mutton pub and entry includes a post race pint with a reduced fee for FRA members.

Trail running at Alice Holt Forest on 7 June 2026 with 10 km and half marathon options, live chip timing, and canicross permitted; finishers receive a medal, merchandise and refreshments.