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Trail Running Calendar near Machen 2026-2027

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Explore the top trail runs near Machen for 2026-2027! We've gathered 108 exciting trail runs in the area. Check out our detailed list below to find your next local trail run.

December 2026
A 7 hour Time Challenge at Dare Valley Country Park in Aberdare offering distances from 5 km to ultra, themed medals, a bobble hat and on-course aid stations.
Timed lap based run at Barry Sidings Country Park offering distances from 5 km to ultra on a 5.3 km tarmac lap with a 7 hour limit.
January 2027
A trail event at Wenchford Picnic Site with seven hills over seven miles or the double 14-mile Immortal Sinner; forest trails may be muddy or icy and canicross waves are available.
A January off road 9.6 mile run across trails, fields and woodland with about 80 percent off road terrain. The event uses chip timing, has one water station at Littleton upon Severn and a 2.5 hour expected run time limit.
A seven hour time challenge at Dare Valley Country Park offering distances from 3 km to 50 km, with medals, aid stations and vegan goody bags.
February 2027
A Backyard Ultra near Crickhowell mixing 50/50 trail and tarmac on a 4.167 mile loop, eleven timed laps then a final race to decide the winner.
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 43 mile point to point ultra from the Brecon Beacons to Nantgarw near Cardiff, following the Taff Trail through upland reservoirs and former railway and canal corridors. Five manned checkpoints and a midway drop bag at Merthyr are provided.
Timed 6 km and 12 km runs at Blaise Castle on Valentine's Day with singles and couples entries, chip timing, and a heart medal for all finishers.
A 7 hour time-challenge at Dare Valley Country Park offering looped distances from 3 km up to ultra, with medals, distance pins, goody bags and on-course aid.
March 2027
Ultra trail in Crickhowell on 6 March 2027 with 10, 20 and 40 mile routes, fully marked courses, GPX files and canicross friendly entries.
Winter Green Man Ultra offers 45 mile and 30 mile anti clockwise loops around Bristol's Community Forest Path with staffed checkpoints, navigation support and finishers' medals.
Six hour trail event at Symonds Yat with 5.25 km loops, 160 m ascent per loop, technical terrain and medals awarded by completed loops.
Annual March challenge walk around Abergavenny with four route options from about 10 to 20 miles, mountain checkpoints and charity fundraising.
A way marked half marathon through forest trails around Speech House in the Forest of Dean on 21 March 2027. The Rotary Club organises the event with chip and gun timing, three water stations and charity links.
April 2027
Three long distance mountain trail races start and finish in Brecon, following circular routes through the Brecon Beacons National Park. Distances range from a marathon to a 100 km ultra with marked routes, checkpoints and compulsory kit requirements..
Trail and road running in Monmouth with hilly terrain, stiles, scenic views, well stocked aid stations and strong volunteer support, organised by Stable Adventures.
A 200 mile point to point trail race across South Wales from Chepstow to Worm’s Head, with a 120 hour limit, live runner tracking, eight aid stations and organised drop bag support.
Trail ultramarathons in the Mendip Hills offering two self navigation distances, 50 miles and 50 km, organised by Town and Country Harriers to benefit the Mendips Hills Fund. Aid stations, GPS trackers, finish medals, prizes and camping are provided.
Traverse the mountains and forests of the Brecon Beacons National Park with 10, 20, or 40 mile trail options. Enjoy a fully marked course and well stocked checkpoints in this canicross friendly mountain challenge.
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