Trail Running Calendar Wales 2026-2027
We have found 181 Trailruns in Wales. Check below where and when you can find the races.
0 – 100∞ km
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A 102 mile self navigation ultramarathon across Snowdonia Eryri with 5,172 m of ascent, 11 checkpoints and a 42 hour cut off. Entrants need prior 50 mile ultramarathon experience, mandatory mountain kit and GPS tracking.
A 45 mile mountain ultramarathon around Snowdonia based at Betws y Coed with ridge trails, five staffed checkpoints and live GPS tracking. Entry for 2026 is full and participants must meet qualifying criteria and carry mandatory mountain ki..
Waun Fach on 6 September 2026: a 11.2 km, 610 m ascent fell race on a classic horseshoe route with marshals, limited to 50 entries; fee covers parking and light refreshments.
A 24 hour loop race at OnePlanet Adventure in Llandegla, Wales. Individuals or two person teams run as many 3 mile laps as possible on forest trails with about 144 m elevation per lap.
Guided run over the 15 Welsh 3,000 ft peaks in Snowdonia, covering about 30 miles and 4,000 m ascent with support and catering.
Run as far as you like at Alice in Runderland, a timed multi lap event at Parc Taf Bargoed with flexible start times and on course support. Choose from one lap up to marathon and earn a bespoke finisher medal.
An 8 km mountain race over the three peaks of the Eifl near Pwllheli with about 490 m of ascent. Main race for over 16s with entry on the day £10; junior races are held with a £3 entry.
A partly marked fell race from the Raven Inn, covering 11.25 km with 445 m ascent. Day-entry only at £5, minimum age over 18, and participants should allow about 15 minutes to walk to the start.
A long, non-commercial fell race in the Black Mountains with a 27.4 km route and 1586 m of ascent. The event uses five checkpoints, requires full navigational kit, and operates on open access land with no on-course water provided.
A half marathon trail across the Clwydian Hills to the summit of Moel Famau, featuring about 21.4 km and 750 m of ascent. Staggered starts aim for a shared sunset summit and canicross entries are welcome.
A 100 mile ultramarathon along the Cambrian Way from Rhayader, Wales, on 12 September 2026, with live GPS tracking, on-route support and a finisher medal.
A 12 km canitrail and trail run in Ogmore Vale on 13 September 2026 supporting PAPYRUS Prevention of Young Suicide, held at Halo Ogmore Valley Life Centre with a listed ticket price of 26 GBP and a no refunds policy.
A 12 hour Backyard Ultra on a 4.2 mile loop near Crickhowell in the Black Mountains. The final lap is run in reverse as a sprint to decide male and female winners; medals are awarded for 32 miles or more.
A short beach race along Abersoch beach on 19 September 2026 that mixes hard and soft sand and several groynes. Finishers receive a zinc alloy medal and winners earn cash prizes including a course record bonus.
The Fan Brycheiniog will take place in Llywel on Saturday 19 September 2026. You can run 16 kilometers.