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Rasus y Bannau
Ultra through Bannau Brycheiniog, the Brecon Beacons
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Canalathon Ultra
Canal towpath ultra from Sowerby Bridge toward Manchester
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Welshpool 10K
Held on the grounds of Powis Castle, Welshpool
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Gorseinon 10K & 2K
A road 10K/2K raising funds for Morgan's Army
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bigmoose Ultra Fun Run
Charity run through Cardiff's Bute Park
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Pendine Sands Races
Ultra to 5K races across the windswept sands of Pendine Beach
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Cymoedd Sir Fynwy
Climbs Skirrid and the Black Mountains via Llanthony
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Beast of the Beacons
40, 20 or 10 miles across the Brecon Beacons
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Newport Marathon Festival
One of the flattest marathon courses in Europe
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Trawsfynydd Lake Race
Circles Trawsfynydd Lake, past its retired nuclear plant
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The Medieval Backyard Ultra
Last one standing looping a medieval themed lakeside course
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Vale Coastal Trail Races
Follows the Wales Coast Path through the Vale of Glamorgan
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Pembrokeshire Coastal Ultra
Rugged Pembrokeshire coastline from 10K to full ultra
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Monbrec Canal 40 Mile Race
40 miles along the Monmouthshire & Brecon Canal towpath
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Save any of these to your season in RunCalendar and hear the morning entries open. Free on iPhone, no account needed.
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.