Half marathons in Wales
Find half marathons in Wales. Compare 25 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 Anglesey Trail Half Marathon & 10K, Cardiff MoRun and Beacons Trail Marathon, Half Marathon & Ultra.
Narrow your search to Cardiff, South Wales and Rhondda Cynon Taf, or browse the other locations below.
37 listed events · 25 with upcoming dates
Upcoming half marathons
25 matching events, earliest date first. Entry availability is shown separately.
Anglesey Trail Half Marathon & 10K
WALAnglesey, Wales
Anglesey Trail Half Marathon & 10K — Newborough Forest, Anglesey. Listed on runABC (North of England).
· Half marathon · Status TBC
Race details, entry and past editions →Cardiff MoRun
WALCardiff, South Wales
10K and 5K running event in Cardiff.
· Half marathon · Status TBC
Race details, entry and past editions →Beacons Trail Marathon, Half Marathon & Ultra
WALTalybont-on-Usk, South Wales
Half, Marathon trail running in Talybont-on-Usk.
· Half marathon
Race details, entry and past editions →Entry information ↗Endurancelife Gower
WALGower Peninsula, South Wales
Half, Marathon, 5K, 10K mixed running in Gower Peninsula.
· Half marathon · Status TBC
Race details, entry and past editions →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 ↗Conwy Half Marathon
WALConwy
Conwy Half Marathon — Half at Conwy and the Great Orme.
· Half marathon
Race details, entry and past editions →Entry information ↗Phoenix South Wales — Frozen Phoenix
WALPontypridd, Rhondda Cynon Taf
Phoenix South Wales Frozen Phoenix — Pontypridd.
· Half marathon
Race details, entry and past editions →Entry information ↗Chepstow Running Festival — January 2027
WALChepstow, Monmouthshire
Chepstow Running Festival — Chepstow Racecourse, Monmouthshire.
· Half marathon
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 ↗Tata Steel Llanelli Half Marathon 2027
WALLlanelli, Carmarthenshire
Tata Steel Llanelli Half Marathon — Llanelli, Carmarthenshire.
· Half marathon
Race details, entry and past editions →Entry information ↗Dydd Gŵyl Dewi Half Marathon 2027
WALAberdaron, Gwynedd
Dydd Gŵyl Dewi Half Marathon 2027 — an officially published half-marathon fixture at Llŷn Peninsula from Tudweiliog to Aberdaron.
· Half marathon
Race details, entry and past editions →Entry information ↗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 ↗Wrexham Half Marathon 2027
WALWrexham, Wrexham County Borough
Wrexham Half Marathon — Wrexham, Wales.
· Half marathon
Race details, entry and past editions →Entry information ↗Brechfa Trail Half Marathon & Marathon
WALBrechfa Forest, Carmarthen
Running event in Brechfa Forest, Carmarthen.
· Half marathon · Status TBC
Race details, entry and past editions →Mizuno Swansea Half Marathon 2027
WALSwansea
Mizuno Swansea Half Marathon — Swansea, Wales.
· Half marathon
Race details, entry and past editions →Entry information ↗Merthyr Half Marathon 2027
WALMerthyr Tydfil
Merthyr Half Marathon 2027 — an officially published half-marathon fixture at Merthyr College, the Trevithick Trail and the Taff Trail.
· Half marathon
Race details, entry and past editions →Entry information ↗Big Moose Ultra Fun Run
WALCardiff, Wales
Big Moose Ultra Fun Run — Bute Park, Cardiff. Listed on runABC (South of England).
· Half marathon · Status TBC
Race details, entry and past editions →The Pendine Sands Races
WALPendine Sands, Carmarthanshire
Running event in Pendine Sands, Carmarthanshire.
· Half marathon · Status TBC
Race details, entry and past editions →ABP Newport Marathon Festival 2027
WALNewport
ABP Newport Half Marathon — Newport, Wales.
· Half marathon
Race details, entry and past editions →Entry information ↗Jones o Gymru Anglesey Half Marathon & 10K 2027
WALMona, Isle of Anglesey
Jones o Gymru Anglesey Half Marathon & 10K 2027 — an officially published half-marathon fixture at Mona Showground and closed roads across Anglesey.
· Half marathon
Race details, entry and past editions →Entry information ↗Fishguard Half Marathon
WALFishguard, Pembrokeshire
Fishguard Half Marathon — Goodwick and Fishguard, Pembrokeshire.
· Half marathon
Race details, entry and past editions →Entry information ↗The Wales Half Marathon
WALPembroke, Pembrokeshire
The Wales Half Marathon — Pembroke to Tenby, Pembrokeshire.
· Half marathon
Race details, entry and past editions →Entry information ↗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 ↗Chepstow Running Festival — August 2027
WALChepstow, Monmouthshire
Chepstow Running Festival — August 2027 — an officially published 5K fixture at Chepstow Racecourse, Chepstow.
· Half marathon
Race details, entry and past editions →Great Welsh Marathon & Half Marathon
WALSouth Wales (venue TBC), South Wales
Great Welsh Marathon & Half Marathon in South Wales (venue TBC).
· Half marathon · Status TBC
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.
Beaumaris Run Fest – Coast 2 Castle
WALBeaumaris, Isle of Anglesey
Beaumaris Run Fest – Coast 2 Castle — 10K, Half at Beaumaris and the Anglesey coast.
Next date not listed
Race guide and recorded editions →Cardiff Half Marathon
WALCardiff
Cardiff October half marathon.
Next date not listed
Race guide and recorded editions →Cardiff Half Marathon
WALCardiff
Cardiff Half Marathon
Next date not listed
Race guide and recorded editions →Cardiff Half Marathon
WALCardiff
Cardiff Half Marathon
Next date not listed
Race guide and recorded editions →Cardiff Taff Trail Half Marathon
WALCardiff
Cardiff Taff Trail Half Marathon — Half at Pontcanna Fields and the Taff Trail.
Next date not listed
Race guide and recorded editions →IAAF World Half Marathon Championships
WALCardiff
IAAF World Half Marathon Championships
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), Cardiff (2), Chepstow (2). Use the town filter to compare locations, then check the race guide for the start venue and organiser’s travel information.
Questions about half marathons in Wales
Which half marathons are coming up in Wales?
Anglesey Trail Half Marathon & 10K is listed for 1 November 2026 (status to be confirmed). Cardiff MoRun is listed for 1 November 2026 (status to be confirmed). Beacons Trail Marathon, Half Marathon & Ultra is listed for 7 November 2026. 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.