Trail Running calendar near Nantgarw 2026-2027

A 5k obstacle course at Coopers Field, Bute Park, Cardiff, with tarmac paths and grassy sections that can get boggy after rain. The event raises funds for Cancer Research UK and uses staggered wave starts; participants must be 13 or older.

A Pretty Muddy 5k obstacle course at Lydiard Park on 01 May 2027 featuring mixed paths, hills and muddy obstacles. The event has wave starts, blue badge parking on grass and a minimum fundraising target of £50.

An official Backyard Ultra at Blaise Castle Estate on 1 May 2027 where runners complete a 6.7056 km loop each hour until one runner remains. The woodland loop is hilly and technical, head torches are mandatory at night and minimum age is 20..

A trail running event in Exmoor National Park near Lynton offering five routes from 5 km to a 56 km ultra, with coastal cliffs, inland valleys and significant elevation gain. Outposts, onsite parking and required safety kit are specified.

A one-day trail event in Ilmington offering six distances from 10K to 100KM plus a new two person 100KM relay, with feed stations, baggage support, GPX maps and trackers on the longer routes.

An off-road half marathon and 10 km trail event near Ludgershall through bridle and woodland tracks, with chip timing, stocked aid stations, full medical support, finishers' medals and prizes for the top three men and women.

Multiple trail race distances in the Stroud area using towpaths, disused railway tracks and Cotswold hills, with a route that ascends to Selsley Common for wide valley views. Water, marshals and first aid are provided on course.

Trail races at Roadford Lake in Devon include a half marathon, 10K, 5K, canicross options and kids races, with chip timing, medals and finish line refreshments. Parking is charged at £5 per car.

A 10k trail run at Symonds Yat with riverside views and a notable final one kilometre climb. The mostly off road course includes long gravel firetracks and on site coffee and hot food.

Trail running event on 22 May 2027 from Sudeley Castle through the Cotswold Way and Winchcombe Way. Five distances from 7 km to 50 km, fully marked and timed with on-course outposts and GPX files.

A family friendly inflatable obstacle run in Bristol on 22 May 2027 with inflatable obstacles, music zones and finisher medals. Distances run on repeated 2.5 km laps from 2.5 km to 15 km.

Margam Wild Trail Runs at Margam Country Park on 23 May 2027 offers 5 km, 10 km and half marathon trail routes, is canicross friendly, uses live chip timing, and provides medals and post-race refreshments.

A multi-stage event at Dare Valley Country Park where runners complete five Pure distances within 24 hours, with separate and combined results. Distances include 5k, 10k, 50k, half marathon and marathon.

A fully supported trail running event in May 2027 following the Heart of Wales Line Trail from Llandrindod Wells to Craven Arms, with three waymarked distances: 50 miles, 26 miles and 16 miles.

A trail event on the final sections of the 141-mile Heart of Wales Line, offering 50, 26 and 16 mile races that finish at the Shropshire Hills Discovery Centre, with baggage transfer and course checkpoints.

The Pretty Muddy 5 km obstacle course at Baiter Park, Poole on 29 May 2027 runs across grass and tarmac with staggered wave starts every 15 minutes. Participants must be 13 or older and there is a minimum fundraising target.

Two trail events in Bristol offering 55 km and 25 km routes that start and finish in the city centre and pass riverside paths, parks and the Clifton Suspension Bridge. Walkers, joggers and runners are welcome.

A multi-distance running event in Bath that passes through two long, lit former railway tunnels and starts and finishes at Brickfields Park. Options range from a 500 m Colourburst to an ultramarathon and the event supports Sustrans.

A 10 hour loop endurance race on Mynydd Troed featuring a technical 2.7 mile circuit with over 1000 ft of climbing per lap. Solo, pair and four person team entries count laps collectively under a strict 10 hour cutoff.

A 125 km waymarked loop following the Pewsey Vale Circular walk with about 1902 m ascent and GPX files provided. Checkpoints appear roughly every 25 km, there is a 24 hour cut off, and camping is available at Linkenholt Activity Center.