Ultramarathons in Wales
Find ultramarathons in Wales. Compare 6 upcoming events by date and location. Open a race guide for the course, recorded editions and official entry information where available.
Events to explore include Black Beacon Mountain Races, Big Moose Ultra Fun Run and SheUltra™.
Narrow your search to Powys, Gwynedd and Monmouthshire, or browse the other locations below.
12 listed events · 6 with upcoming dates
Upcoming ultramarathons
6 matching events, earliest date first. Entry availability is shown separately.
Black Beacon Mountain Races
WALHay-on-Wye / Pontneddfechan, Powys
Four mountain trail distances in the Bannau Brycheiniog area.
· 50K · Status TBC
Race details, entry and past editions →Big Moose Ultra Fun Run
WALCardiff, Wales
Big Moose Ultra Fun Run — Bute Park, Cardiff. Listed on runABC (South of England).
· 50K · Status TBC
Race details, entry and past editions →SheUltra™
WALAbersoch to Pwllheli, North Wales
Running event in Abersoch to Pwllheli, North Wales.
· 50K · Status TBC
Race details, entry and past editions →Gower Peninsula Ultra Challenge
WALPenrice, Swansea
Gower Peninsula Ultra Challenge in Penrice.
· 100K / 50K
Race details, entry and past editions →Beacons Way Ultra 100KM
WALTalybont-on-Usk, Powys
Beacons Way Ultra 100KM in Talybont-on-Usk.
· 100K
Race details, entry and past editions →Ultra X Wales
WALAbergavenny, Monmouthshire
Ultra X Wales in Abergavenny.
· 50K
Race details, entry and past editions →Race archive
Past races and previous editions
Looking back at a race? Browse the guides below for recorded editions. This section also includes events awaiting a new date and cancelled editions. Previous editions of races in the upcoming calendar are available through their race guides above.
Dragon's Back Race
WALConwy, Wales
Dragon's Back Race — Conwy Castle, Conwy. Listed on runABC (Scotland).
Next date not listed
Race guide and recorded editions →Run To The Castle Ultra
WALNorth Wales, Wales
Run To The Castle Ultra — Village Hall, Aberdyfi, North Wales. Listed on runABC (North of England).
Next date not listed
Race guide and recorded editions →Sea To Summit Yr Wyddfa
WALGwynedd, Wales
Sea To Summit Yr Wyddfa — Caernarfon Castle, Gwynedd. Listed on runABC (North of England).
Next date not listed
Race guide and recorded editions →South Wales Alice In Runderland
WALMerthyr Tydfil, Wales
South Wales Alice In Runderland — Rock UK Summit Centre, Trelewis, Merthyr Tydfil. Listed on runABC (South of England).
Next date not listed
Race guide and recorded editions →South Wales Are We There Yet?
WALSouth Wales, Wales
South Wales Are We There Yet? — Cwm Darren Park, Caerphilly, South Wales. Listed on runABC (South of England).
Next date not listed
Race guide and recorded editions →Ultra-Trail Snowdonia by UTMB® — Eryri 50K
WALLlanberis, Gwynedd
Historical results collected from the UTMB Index.
Next date not listed
Race guide and recorded editions →Browse counties and areas
Choosing a race in Wales
The unfiltered upcoming calendar includes events in Abergavenny (1), Abersoch to Pwllheli, North Wales (1), Cardiff (1). Use the town filter to compare locations, then check the race guide for the start venue and organiser’s travel information.
Questions about ultramarathons in Wales
Which ultramarathons are coming up in Wales?
Black Beacon Mountain Races is listed for 31 October 2026 (status to be confirmed). Big Moose Ultra Fun Run is listed for 11 April 2027 (status to be confirmed). SheUltra™ is listed for 17 April 2027 (status to be confirmed). Check the race guide and organiser’s latest information before making plans.
Where can I find race entry details for Wales?
Follow the link from the race guide to the organiser or entry provider, where one is available. Check the entry deadline, eligibility and current availability there. A listed race date does not necessarily mean entries are still open.
Why has a race moved out of the upcoming calendar?
Once its listed dates have passed, a race moves to the past-editions view unless another upcoming edition is recorded. Cancelled events also leave the upcoming list. The race guide stays available, and the event returns when a new date is added.