Trail Running calendar near Cardiff 2026-2027

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 Beyond Bristol Ultra will take place in Bristol city centre on Saturday 5 June 2027. You can run between 25 and 55 kilometers.

A multi distance running event in Bath that features long underground sections through the Devonshire and Combe Down tunnels and a city centre start and finish at Brickfields Park. Races range from 500 m Colourburst to an ultra marathon.

BigSea on the Isle of Purbeck starts and finishes on Knoll Beach and offers Half Marathon, 18 Mile, Marathon and 54k routes across the Purbeck Hills and coastal landmarks. Aid stations provide snacks, water and vegan options and PH 1000 ele..

A backyard ultra at Breakheart Quarry where runners repeat a **6706 metre** loop every hour until one person remains; the event includes camping, marked trails and on course support in the Cotswold countryside.

A multi-distance trail event around the Cotswolds from a Cirencester basecamp on 12 to 13 June 2027. Distances range from 10 km to 100 km with staffed rest stops, GPS tracking, camping, medical support and finisher kit.

A scenic off road race day around Cheddar Gorge and the Mendip Hills with distances from 1 km to a UTMB indexed Marathon and Half Marathon. Marked trails, multiple feed stations and large event medals for 6 km and longer.

A Pretty Muddy 5k at The Downs in Bristol with grass start and finish, mixed terrain and obstacles to climb, crawl and slide. Staggered wave starts apply and the event supports Cancer Research UK with a minimum fundraising target.

The Inflatable 5K - Cardiff will take place in Cardiff on Saturday 26 June 2027. You can run between 5 and 15 kilometers.

A 10 hour loop endurance race on Mynydd Troed with a technical 2.7 mile circuit and over 1000 ft of ascent per lap. Solo, pair and four person team entries are accepted; the route is fully marked with two clip stations and strict kit rules.

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.

Two ultramarathon options along the Beacons Way in the United Kingdom on 24 and 25 July 2027. The event is part of the Ultra Great Britain Race Series and features live online GPS tracking.

A guided, hilly 30 mile trail run along the Jurassic Coast and Isle of Purbeck with coastal landmarks, group pacing and on-route guidance from an experienced ultra runner. Entry includes pre-run information and a possible alcohol free beer..

A trail running event in Bickington, United Kingdom organised by Relish The Great Outdoors Ltd. The published start list shows 466 entrants across 10 km, half marathon, 25 km, marathon and 50 km races with interval wave starts.

A new quadrennial ultra of about 39.7 miles along National Cycle Route 8 from Glasbury to Merthyr Tydfil, serving as Day 5 of the Mount to Coast CYMRUN. The field is limited to 40 runners and cutoffs are enforced on a 4 mph average.

A single-day ultra of 34.8 miles along National Cycle Route 8 from Merthyr Tydfil to Barry Island, held as Day 6 of the MTC CYMRUN. Field limited to 40, mandatory kit and a 4.0 miles per hour minimum average speed apply.