Trail Running calendar near Semington 2025-2026

Tackle 100 km across the Brecon Beacons on an epic route taking in Pen y Fan and the Carmarthen Fans with roughly 3178 m of ascent. A rugged self navigation ultra with just 250 places and a 24 hour cut off.

Ultra X Wales takes runners into the wild Brecon Beacons and Black Mountains for a scenic multi day trail event on 25 to 26 July 2026. Distances from 12 km to 110 km suit all endurance levels and select races carry UTMB Index status.

Enjoy a scenic, flat trail run around Maidenhead Commons and Summerleaze Lake on Sunday 26 July 2026. Choose 5K, 10K or half marathon and earn a themed medal with free race photos, chip timed results and a lively event village.

Take on the Pen Y Fan Challenge, a scenic trail race up to the summit with 5 mile and 13 mile options. Enjoy chip timing, a finisher medal and buff, marshalled routes and stunning South Wales views.

Join the North Downs 50 Ultra Challenge on Sat 1 Aug 2026 for scenic runs from Guildford across Surrey hills and the North Downs Way. Choose 10 km, 25 km or 50 km routes with full support, night markings and medical cover.

Join EDDUM 2026, a scenic 50 mile trail around the Epynt Way encircling the Sennybridge Training Area in Wales. With no time limits, five manned checkpoints and full crew support, it is a welcoming test of endurance.

Take on the MTC Thames Challenge, a four day 184 mile multi stage endurance race along the scenic Thames Path from the source to the Thames Barrier. Included hotels and main evening meals connect the stages for a supported ultra experience.

Tackle the MTC Cotswold Ultra, a scenic 57 mile point to point along the Thames Path from Kemble to Oxford, with a bespoke medal and MTC head visor for all. Classic Cotswold views and trophies for winners make this a memorable challenge.

Scenic 7 hour timed run along the River Thames on 7 Aug 2026 lets you choose any distance from 3 km to ultra. Finishers get medals and distance pins, with aid stations, cafe and vegan goody bags.

Take on the MTC Oxford Ultra, a 49 mile point to point along the Thames Path from Oxford to Henley. Expect scenic riverside trails, three support checkpoints and challenging self sufficient ultrarunning with a bespoke finisher medal.

Take on the 47 mile MTC Windsor Ultra along the scenic Thames from Henley to Kingston, testing endurance with three aid stops and rolling river views. Finishers get a bespoke medal and choice of tech shirt, mug or hat.

Run the Mendip Marauder, a scenic but hilly trail on the Mendip Way with 30 or 50 mile options that traverse Ebbor Gorge, Cheddar and woodlands before a memorable finish on Uphill Sands Beach. Well marked trails and staffed aid stations sup..

Take on the North Downs Way 100, a 103 mile trail classic from Farnham to Ashford with 11,000 feet of climbing and a 30 hour cutoff. This Centurion Running event is a Western States qualifier on mostly trail terrain, ideal for experienced u..

Enjoy a lively 10 km multi terrain run around Ramsbury Brewery on Sunday 9 August 2026, with a canicross option and mostly off road trails. Finish with a pint and support Brighter Futures in this friendly community race.

Join Saturn Too Midweek Medal Madness on 14 August 2026 for a seven hour timed challenge along the Thames with distances from 3 km to ultramarathon. Finish 3 km to earn a medal and goody bag with drink stops on course.

Run the Southampton Running Festival on 16 August 2026 at Southampton Common with 5K, 10K, half marathon and junior races. Scenic laps through woodland, ponds and parkland, plus an event village and a focus on sustainability.

Experience the Two Tunnels in Bath, a unique run through two lit, surfaced railway tunnels and rolling paths. Options span short Colourburst runs up to marathon and 50 km distances, with proceeds supporting Sustrans.

Take on the Beast of Llangattock, a scenic trail on 22 August 2026 with distances from 10 km to a 32 mile ultra across the Llangattock Escarpment and Clydach Gorge. Fully marked course with checkpoints, food options and medical cover.

Take on the Summer GMU around Bristol on 22 August 2026 with 45 mile and 30 mile clockwise courses starting at Ashton Park School. Enjoy checkpoint support, tracking and a bespoke medal for finishers in this scenic endurance challenge.

Enjoy scenic trail running and canicross around Wimbleball Lake on August 28, 2026, with 5K and 10K routes for runners and dog teams. Camping, parking and toilets on site make it a relaxed lakeside race day with medals for all finishers.