Trail marathons in Wales
Find trail marathons in Wales. Compare 3 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 Beacons Trail Marathon, Half Marathon & Ultra, Brechfa Trail Half Marathon & Marathon and OTT Trail Marathon & 10 Mile Trail Race 2027.
Narrow your search to Merthyr Tydfil and South Wales.
3 listed events · 3 with upcoming dates
Upcoming marathons
3 matching events, earliest date first. Entry availability is shown separately.
Beacons Trail Marathon, Half Marathon & Ultra
WALTalybont-on-Usk, South Wales
Half, Marathon trail running in Talybont-on-Usk.
· Marathon
Race details, entry and past editions →Entry information ↗Brechfa Trail Half Marathon & Marathon
WALBrechfa Forest, Carmarthen
Running event in Brechfa Forest, Carmarthen.
· Marathon · Status TBC
Race details, entry and past editions →OTT Trail Marathon & 10 Mile Trail Race 2027
WALMerthyr Tydfil
OTT Trail Marathon & 10 Mile Trail Race 2027 — an officially published 10-mile fixture at Parkwood Outdoors, Dolygaer, Merthyr Tydfil.
· Marathon
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.
No separate archived race guides are listed for this selection yet.
View full race archive (0) →Browse counties and areas
Choosing a race in Wales
The unfiltered upcoming calendar includes events in Brechfa Forest, Carmarthen (1), Merthyr Tydfil (1), Talybont-on-Usk (1). Use the town filter to compare locations, then check the race guide for the start venue and organiser’s travel information.
Questions about marathons in Wales
Which trail marathons are coming up in Wales?
Beacons Trail Marathon, Half Marathon & Ultra is listed for 7 November 2026. Brechfa Trail Half Marathon & Marathon is listed for 13 March 2027 (status to be confirmed). OTT Trail Marathon & 10 Mile Trail Race 2027 is listed for 15 May 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.