Trail Running calendar near Semington 2026-2027

A winter mountain trail event from Brecon to Cardiff featuring a 47.5 mile ultra over 11 summits and a 26.2 mile marathon from Merthyr, both on unmarked routes with GPS navigation and staffed checkpoints.

A one way, fully marked 70k ultramarathon along the Taff Trail from Brecon to Nantgarw. The route moves from mountain landscapes to former industrial valleys and includes coach transfer to the start, checkpoints and live GPS tracking.

A timed event on a 2.62 mile out and back canal route with flexible rock up and run starts. Distances range from 5 km through marathon and beyond, with a seven hour time limit and a finisher medal for all.

A fully signed trail ultra on the North Downs Way and Norbury Park, the North Downs Ridge **50k** has 2986 ft ascent and four checkpoints. The event is based at Denbies Wine Estate near Dorking on 21 February 2027.

Two Tunnels in Bath on 21 February 2027 offers many distances and runs through two long restored, lit and surfaced railway tunnels under the city, with start and finish at Brickfields Park and a charity contribution to Sustrans.

BigMud is the Earth event in the Classic Element Trail Series, with single-lap muddy routes in the Meon Valley and three distances. Races start and finish at Queen Elizabeth Country Park with marked courses, aid stations, and mandatory hydr..

Looped 7K and 10K courses in Chalfont St Peter and Gerrards Cross let runners choose distances from a single loop to ultramarathon. Aid stations, marked routes, crew access and medical support are provided, with prizes for top finishers in..

Fitstuff G3 No.3 is a running event at Newlands Corner, Guildford on 27 February 2027 offering 10 km and 15 km distance options with single-entry prices and multi-event bundle options in GBP.

A 7 hour Time Challenge at Dare Valley Country Park on 28 February 2027 offering flexible distances from 3 km up to ultra and 50 km, with medals, distance pins, goody bags and on-course aid at each lap.

Looped 7K and 10K courses in Chalfont St Peter and Gerrards Cross let runners choose distances from a single loop to ultramarathon. Aid stations, marked routes, crew access and medical support are provided, with prizes for top finishers in..

A 10 km mixed-terrain run from Windsor & Eton Brewery along towpaths and parkland, with staggered starts, a pint cup and free drink at the finish, chip timing and downloadable race photos.

Marked trail runs in the Black Mountains from Crickhowell, Powys, with 10, 20 and 40 mile options, stocked checkpoints, mandatory kit checks and cut off times of 5, 8 and 16 hours respectively.

A winter ultra around Bristol on the Community Forest Path with two self-navigated distances, chip timing and checkpoint support. Timelords offer pacing and finishers receive event kit and certificates.

A winter ultra around Bristol's Community Forest Path offering 45 or 30 mile anti clockwise routes. Self navigated with GPX support and pacers, timed checkpoints, cup free aid stations and bespoke finisher medal and technical tee.

The Imber Ultra is an annual trail run of just over 33 miles organised by Avon Valley Runners and the Rotary Club of Westbury, with route details, checkpoints, results and photos provided by the organisers.

A coastal mixed terrain event at Milford on Sea with an out and back 5.3 km lap. Runners pick their distance from 5K to ultra with aid stations, toilets, and a medal for anyone completing at least one lap.

Trail races from Larmer Tree Gardens take runners around the Rushmore Estate with distances from a fun mile to a marathon. Courses pass chalk valleys and woodlands and include multiple feed stations and event medals.

A night-time trail 10k at Coombe Abbey Park that requires a head torch and features woodland, meadow and field terrain. Petzl demo torches are expected, drinks in biodegradable cups are provided and dogs are not permitted.

A guided trail half marathon in the Chiltern Hills covering about 13 miles with 300 m of ascent, group-led by qualified run leaders and including a refreshment point, finisher's medal and Trees not Tees certificate.

A coastal trail run from Swanage seafront to Corfe Castle offering three distances, firm chalk and sandy trails, on-course support, and a private vintage train return priced at £9 per person.