Trail running races in Wales
Find trail running races in Wales. Compare 31 upcoming events by date and location. Open a race guide for the course, recorded editions and official entry information where available.
Upcoming running events include half marathons, 10K races, 10 mile races, 50K races, 5K races and 25K races.
Events to explore include Black Beacon Mountain Races, Anglesey Trail Half Marathon & 10K and Excalibur Winter Trail Races.
Narrow your search to Gwynedd, Powys and Monmouthshire, or browse the other locations below.
41 listed events · 31 with upcoming dates
Upcoming trail running races
31 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.
· 100mi · Status TBC
Race details, entry and past editions →Anglesey Trail Half Marathon & 10K
WALAnglesey, Wales
Anglesey Trail Half Marathon & 10K — Newborough Forest, Anglesey. Listed on runABC (North of England).
· 10K / 5K / Half marathon
Race details, entry and past editions →Entry information ↗Excalibur Winter Trail Races
WALNorth Wales, Wales
Excalibur Winter Trail Races — Coed Moel Famau Car Park, near Mold, North Wales. Listed on runABC (North of England).
· 10K
Race details, entry and past editions →Entry information ↗Beacons Trail Marathon, Half Marathon & Ultra
WALTalybont-on-Usk, South Wales
Half, Marathon trail running in Talybont-on-Usk.
· Half marathon / Marathon
Race details, entry and past editions →Entry information ↗Afan Forest Trail Half Marathon & 10K
WALPort Talbot, Neath Port Talbot
Afan Forest Trail Half Marathon — Afan Forest Park, Port Talbot.
· Half marathon
Race details, entry and past editions →Entry information ↗Slate Trail Ultra & Ultra Tour of the Quarries
WALBangor, Gwynedd
Long mountain trail routes around the slate landscapes of Eryri.
· 147K / 80K · Status TBC
Race details, entry and past editions →RTT Afan Forest Trail 10K & 5K
WALPort Talbot, Wales
RTT Afan Forest Trail 10K & 5K — Bryn Bettws Lodge, Port Talbot. Listed on runABC (South of England).
· 10K / 5K
Race details, entry and past editions →Entry information ↗The Milkshake Meander — Wales 2027
WALAberdare, Rhondda Cynon Taf
The Milkshake Meander Wales — Aberdare.
· Half marathon
Race details, entry and past editions →Entry information ↗Brecon to Cardiff Classic & Xtreme
WALBrecon to Cardiff, Wales
Running event in Brecon to Cardiff, Wales.
· 43mi · Status TBC
Race details, entry and past editions →Caerphilly Trail Races: 5K & 10K
WALVan Community Centre, Caerphilly
Running event in Van Community Centre, Caerphilly.
· 10K / 5K · Status TBC
Race details, entry and past editions →St David's Day Dragon Run 2027
WALAberdare, Rhondda Cynon Taf
St David's Day Dragon Run — Aberdare, Wales.
· Half marathon
Race details, entry and past editions →Entry information ↗Beast of the Blacks 10, 20 & 40 Mile 2027
WALCrickhowell, Powys
Beast of the Blacks 10, 20 & 40 Mile 2027 — an officially published 10-mile fixture at Crickhowell and the Black Mountains.
· 10mi / 16.9K / 32.5K / 65K
Race details, entry and past editions →Entry information ↗Brechfa Trail Half Marathon & Marathon
WALBrechfa Forest, Carmarthen
Running event in Brechfa Forest, Carmarthen.
· Half marathon / Marathon · Status TBC
Race details, entry and past editions →Rasus y Bannau / The Beacon Races
WALBrecon, Wales
Running event in Brecon, Wales.
· 104K · Status TBC
Race details, entry and past editions →Wild Horse South Wales 200
WALChepstow to Worm’s Head
Running event in Chepstow to Worm’s Head.
· 200mi
Race details, entry and past editions →Beast of the Beacons
WALTalybont-on-Usk, Brecon
Running event in Talybont-on-Usk, Brecon.
· 10mi / 32.5K / 65K · 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 →EnduranceLife Pembrokeshire
WALLittle Haven, Haverfordwest
Running event in Little Haven, Haverfordwest.
· 13.4mi / 27.3mi / 34.7mi / 7.5mi
Race details, entry and past editions →Vale Coastal Trail 10 Mile 2027
WALLlantwit Major, Vale of Glamorgan
Vale Coastal Trail 10 Mile 2027 — an officially published 10-mile fixture at Llantwit Major Beach to Ogmore-by-Sea, Llantwit Major.
· 10mi / 18.5mi / 32.5mi
Race details, entry and past editions →Entry information ↗Eryri by UTMB®
WALLlanberis, Gwynedd
Eryri by UTMB® — an official UTMB World Series Event.
· 163K / 78K
Race details, entry and past editions →Entry information ↗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.
· 10mi / Marathon
Race details, entry and past editions →Entry information ↗Margam Wild Trail Runs
WALSouth Wales, Wales
Margam Wild Trail Runs — Margam Country Park, Margam, South Wales. Listed on runABC (Midlands).
· 10K / 5K
Race details, entry and past editions →Entry information ↗Ultra Wales 50
WALGanllwyd, Gwynedd
Ultra Wales 50 in Ganllwyd.
· 51mi
Race details, entry and past editions →Calon Lân 300
WALConwy
Calon Lân 300 in Conwy.
· 300mi · Entry closed
Race details, entry and past editions →Snowdonia Trail Marathon Eryri
WALLlanberis, Gwynedd
Snowdonia Trail Marathon Eryri in Llanberis.
· 9.8K
Race details, entry and past editions →Gower Peninsula Ultra Challenge
WALPenrice, Swansea
Gower Peninsula Ultra Challenge in Penrice.
· 100K / 10mi / 25K / 29K / 50K / 75K
Race details, entry and past editions →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.
· Half marathon
Race details, entry and past editions →Entry information ↗Ultra X Wales
WALAbergavenny, Monmouthshire
Ultra X Wales in Abergavenny.
· 100mi
Race details, entry and past editions →Beacons Way Ultra 100 Mile
WALAbergavenny, Monmouthshire
Beacons Way Ultra 100 Mile in Abergavenny.
· 100mi
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 →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.
Abersoch Coast Trail
WALNorth Wales, Wales
Abersoch Coast Trail — Abersoch Beach, Abersoch, North Wales. Listed on runABC (North of England).
Next date not listed
Race guide and recorded editions →Crickhowell 10K
WALGilwern, Wales
Crickhowell 10K — Brecon & Monmouthshire Canal, Gilwern. Listed on runABC (Midlands).
Next date not listed
Race guide and recorded editions →Pembrokeshire Trail Run
WALSouth Wales, Wales
Pembrokeshire Trail Run — Freshwater East Beach, Pembrokeshire, South Wales. Listed on runABC (South of England).
Next date not listed
Race guide and recorded editions →Pumsaint Trail Half Marathon
WALSouth Wales, Wales
Pumsaint Trail Half Marathon — Village Hall, Pumsaint, South Wales. Listed on runABC (Midlands).
Next date not listed
Race guide and recorded editions →RTT Gower Trail Half Marathon, 10K & 5K
WALOxwich, Swansea
Gower Trail races — currently postponed, with a replacement date still to be announced.
Next date not listed
Race guide and recorded editions →RTT Margam Trail 10K & 5K
WALPort Talbot, Neath Port Talbot
RTT Margam Trail 10K & 5K — scenic woodland and parkland races from Margam Country Park.
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 Aberdare (2), Abergavenny (2), Llanberis (2). Use the town filter to compare locations, then check the race guide for the start venue and organiser’s travel information.
Questions about trail running races in Wales
Which trail running races are coming up in Wales?
Black Beacon Mountain Races is listed for 30 October 2026 (status to be confirmed). Anglesey Trail Half Marathon & 10K is listed for 1 November 2026. Excalibur Winter Trail Races is listed for 1 November 2026. Check the race guide and organiser’s latest information before making plans.
What running distances are listed in Wales?
Look for half marathons, 10K races, 10 mile races, 50K races, 5K races and 25K races in the upcoming listings. If an event offers several distances, check the individual race guide to choose the edition and distance you want to enter.
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.