Running races in Wales in Aug 2027

10 races in date order

Brecon Beacons Trail Runs
Sat 7 Aug 2027 · Brecon, Wales · 51K Ultra · 24K Half Marathon
51K and 24K trails through the Brecon Beacons

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Black Cattle Ultra
Sat 14 Aug 2027 · Abergavenny, Wales · 44 miles Ultra · 33 miles Ultra
Point-to-point ultra across the Black Mountains of Wales

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SkyRun Eryri
August 2027 · Caernarfon, Wales · 14 Peaks Ultra · Snowdon SkyRace · Copper SkyTrail · Fairy Trail
Technical peaks and views of the Welsh 3000s in Snowdonia

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Severn Bridge 10k
August 2027 · Chepstow, Wales · 10K
Runs the old Severn Bridge between Wales and England

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Beast of Bryn
August 2027 · Port Talbot, Wales · 10.5 miles · 6.5 miles · Mini Beast
Trails through the mountains of Afan Forest Park

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Ras Beca
August 2027 · Crymych, Wales · Ras Beca
Preseli Hills fell race, home of Stonehenge's bluestones

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Ras Cnicht
August 2027 · Porthmadog, Wales · Ras Cnicht
Up Cnicht, nicknamed the 'Welsh Matterhorn'

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Ras y Cerrig Glas
August 2027 · Crymych, Wales · Ras y Cerrig Glas
Welsh for 'Blue Stones' — the Preseli bluestone hills

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Machen Mountain Race
August 2027 · Caerphilly, Wales · 7 km
Ascends Mynydd Machen above the Rhymney Valley

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Cilcain Mountain Race
August 2027 · Mold, Wales · 7.4 km
Mountain race into Flintshire's Clwydian Range hills

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← Wales Oct Nov Dec Jan 2027 Feb 2027 Mar 2027 Apr 2027 May 2027 Jun 2027 Jul 2027 Sep 2027 Oct 2027 Feb 2028

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Every race here is published by its organiser; RunCalendar checks the date and the entry window against the organiser's own page and rebuilds this calendar every night. A confirmed date shows its day; a provisional one shows only its month. Last updated 22 October 2026.