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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 105 exciting trail runs in the area. Check out our detailed list below to find your next local trail run.

September 2026
A fell running race in Caerphilly on 26 September 2026 featuring a 9.5 km course with 336 m of climb, partially marked and with a short walk from parking to the start.
Trail race at Margam Country Park offering 5 km and 10 km routes through woodland with castle views. The event features chip timing, water stations, a finisher's medal and parking included with entry.
A measured forest trail half marathon in late September with way-marked, marshalled routes, water stations, chip and gun timing, medals for finishers and trophies for category winners.
A coastal 10 km race along the North Somerset shoreline, passing Black Nore Lighthouse and Redcliffe Bay. The mixed terrain route includes grass, mud, rocks and tarmac with undulating sections and a seafront finish.
October 2026
A mixed terrain 9 mile loop in Bridgend where runners complete as many laps as possible within an 8 hour time limit.
A 7 hour Time Challenge at Dare Valley Country Park with flexible distances from 3 km to ultramarathon options. Finishers receive a themed medal, distance pins and refreshments including doughnuts and ice cream.
A fell race on 3 October 2026 with a 3.2 km route and 305 m climb near Storey Arms, included in the South Wales Series; entry on the day £2.
Trail half marathon in the Quantock Hills on 4th October 2026, 21.2 km with 839 m ascent, waymarked route, chip timing, feed stations and wooden finisher medals.
Trail and ruck event at Ashton Court Estate on Oct 4, 2026 offering 6k, 10k and half marathon distances with Pro and Open categories and GORUCK backpacks provided.
A 55 km forest ultra on 10 October 2026 at Beechenhurst, featuring technical single track, open river stretches, on-course aid and a separate canicross category.
Trail race in an Area of Outstanding Natural Beauty around Biblins Youth Campsite, Ross-on-Wye covering approximately 6 miles or 10k on mixed trails and single track. Entry is limited to 200 runners and prizes include individual and team awards.
A ridge fell race in the Black Mountains, 11.7 km with 492 m ascent, run under WFRA rules for runners aged 16 and over.
Trail running at Blaise Castle Estate on 11 October 2026 with 1K, 5K and 10K options plus cultural food, music and family activities.
A volunteer-run Long Slow Distance group run from Commune Cafe in Temple Hill, Bristol with a 15 km road route, regular regrouping, and front and back runners.
A seven hour Time Challenge at Dare Valley Country Park offering distances from 3km to 50km, themed finisher medals and distance pins, on course aid with vegan options, and basic venue facilities including toilets and free parking.
Join the Aberfan Memorial Run in Merthyr Tydfil to honour the 1966 victims and support the Aberfan Memorial Charity. Choose 5 km to ultra on a scenic tarmac loop along the Taff Trail with flexible start times and official timing.
Backyard Ultra in Bristol asks runners to complete a four mile loop each hour for six hours, with a beer, finisher goody bundle, water station and prizes for top male and female.
A 20 km multi terrain fell race on 25 October 2026 across varied Mendip landscapes with 420 m of climb, drinks stations en route and veteran prize categories.
A 32 km, 1800 m mountain run on Pen y Fan with three summit ascents and options for unweighted or 16 kg weighted categories; navigation is self managed.
A 9.6 km fell race with 485 m ascent near Abergavenny on 31 October 2026; full WFRA kit is required and parking at the pub is very limited.
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