Trail 12k events in Wales
Find trail 12k events in Wales. Compare 1 upcoming event by date and location. Open a race guide for the course, recorded editions and official entry information where available.
One event to explore is Ultra X Wales.
Narrow your search to Bridgend County Borough, Gwynedd and Monmouthshire.
Compare running races by distance, date and surface, from shorter road events to trail races and ultras.
3 listed events · 1 with upcoming dates
Upcoming 12k events
1 matching event, earliest date first. Entry availability is shown separately.
Ultra X Wales
WALAbergavenny, Monmouthshire
Ultra X Wales in Abergavenny.
Date listed · latest organiser confirmation not yet checked.
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.
Rabbit Run Wales Half Marathon 2027
WALBridgend, Bridgend County Borough
Rabbit Run Wales Half Marathon 2027 — an officially published half-marathon fixture at Candleston Woods and Merthyr Mawr Warren.
Next date not listed
Race guide and recorded editions →Snowdonia Sea2Sky 12K, 25K & 54K
WALBarmouth, Gwynedd
Snowdonia Sea2Sky — Bath House, The Quay, Barmouth. Listed on runABC (North of England).
Next date not listed
Race guide and recorded editions →Browse counties and areas
Questions about 12k events in Wales
What should I check before a running event in Wales?
Choose your distance, then check the route, elevation, cut-off time and entry conditions in the organiser’s race guide.
Which trail 12k events are coming up in Wales?
Ultra X Wales is listed for 25 July 2027. 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.