33 Half marathons in Wales

Find half marathons in and around Wales for 2023/2024 - filter events by date, display on a map or use the advanced search to find your perfect race.

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The 'UK's most beautiful Half Marathon'! Fast run flanked by breathtaking views of Snowdonia National Park and the Menai Straits. It's no wonder this race has become a firm favourite.
  • Sun 3 Mar 2024
  • £42.99-£47.99
Anglesey, Isle of Anglesey, UK

Jones o Gymru Anglesey Half Marathon

The 'UK's most beautiful Half Marathon'! Fast run flanked by breathtaking views of Snowdonia National Park and the Menai Straits. It's no wonder this race has become a firm favourite.

  • 13.1 miles road running
An exciting and spectacular event starting near Table Mountain and exploring the nearby Black Mountains, with incredible support guaranteed.
  • Sat 28 Sep 2024
  • £49.99
Crickhowell, Powys, UK

Beacons to the Blacks | Half Marathon

An exciting and spectacular event starting near Table Mountain and exploring the nearby Black Mountains, with incredible support guaranteed.

  • 13.1 miles trail running
An iconic road race around Wales' capital offering a flat course from the castle to the marina and over the Cardiff Bay barrage! Family races, huge crowd support and Runners' Village.
  • Sun 6 Oct 2024
  • £45
  • 15 charities
Cardiff, South Glamorgan, UK

Cardiff Half Marathon

An iconic road race around Wales' capital offering a flat course from the castle to the marina and over the Cardiff Bay barrage! Family races, huge crowd support and Runners' Village.

  • 13.1 miles road running
  • Sat 2 Dec
  • £45
Crickhowell, Powys, UK

Secret Santa | Half Marathon Du Mulled Wine

Limitless Trails are very excited to be offering another Secret Santa Series, deep in the heart of the Brecon Beacons National Park.

  • 13.1 miles trail running
  • Sun 10 Dec
  • FREE-£25
Prestatyn, Clwyd, UK

Sea 2 Summit - Offa's Dyke | Half Marathon

The only way is up with these Half Marathon/Marathon/Ultra distance races along the Offas Dyke footpath!

  • 13.1 miles trail running
  • Sat 16 Dec
  • £26
Neath, West Glamorgan, UK

Celtic Half Marathon

With new looped routes for the ultra, a full marathon distance course and the already established classic linear half marathon race,

  • 13 miles trail running
  • Sun 28 Jan 2024
  • £30
Chepstow, Gwent, UK

Chepstow Running Festival | Half Marathon

Kickstart the New Year and run at Chepstow Racecourse – the only event in Wales!

  • 13.1 miles road running
  • Sat 10 Feb 2024
  • £25
Cardiff, Cardiff, UK

The Cardiff Winter Warmer Run | Half Marathon

The superb Cardiff Winter Warmer Run is back in 2024 with a brand new medal plus loads of fun, smiles, laughs and good times.

  • 13.1 miles road running
  • Sat 17 Feb 2024
  • £35
Port Talbot, West Glamorgan, UK

Hoka Half Marathon

In 2024 Run Afan Forest is back hosting at the beautiful Afan Forest.

  • 13.1 miles trail running
  • Sun 18 Feb 2024
  • £25-£27
Wrexham, Clwyd, UK

Village Bakery Wrexham Half Marathon

With loyal support from the Village Bakery, Run Cheshire continues to bring you this fast, flat and chip-timed half.

  • 13.1 miles road running
  • Sun 25 Feb 2024
  • £38-£40
Llanelli, Dyfed, UK

Llanelli | Half Marathon

Be part of an epic event, and guarantee your spot today.

  • 13.1 miles road running
  • Sat 2 Mar 2024
  • £35
Haverfordwest, Pembrokeshire, UK

Ras Dewi Sant | Half Marathon

Ras Dewi Sant is a great running weekend in Britian’s smallest city. There are 3 routes to choose from. Marathon, Half, and 10K.

  • 13.1 miles trail running
  • Sat 2 Mar 2024
  • £27
Rhayader, Powys, UK

Rhayader Round the Lakes | 30K

Rhayader Round The Lakes 30km and a 10km race is based in Rhayader, Powys, Mid Wales.

  • 30 km road running
  • Sun 3 Mar 2024
  • £25
Cardiff, Cardiff, UK

St David's Day Run | Half Marathon

To celebrate St David’s Day join in Bute Park Cardiff and take on a 5k, 10k and Half Marathon run, or the mini run for little dragons.

  • 13.1 miles road running
  • Sat 16 Mar 2024
  • £34
Carmarthen, Dyfed, UK

Brechfa Trail Races | Half Marathon

Brechfa Forest is one of Wales' spectacular hidden secrets.

  • 13 miles trail running
  • Sun 17 Mar 2024
  • £38-£40
Burry Port, Dyfed, UK

Great Welsh Marathon Events | Half Marathon

A Fast, flat course set on the scenic Llanelli coastline

  • 13.1 miles road running
  • Sun 17 Mar 2024
  • £30-£32
Merthyr Tydfil, Mid Glamorgan, UK

The Merthyr | Half Marathon

In 2024, test yourself against a challenging course through beautiful scenery.

  • 13.1 miles road running
  • Sun 24 Mar 2024
  • £36-£38
Colwyn Bay, Clwyd, UK

Colwyn Bay Metric | Half Marathon

Both races start at the Athletics track in Colwyn bay, from here they head along to the promenade and head East along the coastline where both races have their turning points for you...

  • 13.1 km road running
  • Sun 14 Apr 2024
  • FREE-£27.50
Prestatyn, Clwyd, UK

Summit 2 Sea - The Offa's Dyke Half Marathon

The Spring race involving summit and sea, we will be going 'Summit 2 Sea' - and the Half Marathon (ish - it's 13.8 miles) will see runners gather on the summit of Moel y Parc...

  • 13.8 miles trail running
  • Sun 14 Apr 2024
  • £37-£39
Colwyn Bay, Clwyd, UK

Pier2Pier Half Marathon

A scenic Half Marathon that starts and finishes at the Athletics track Colwyn bay, after completing 300m on the track, the route takes you to the Colwyn bay pier,

  • 13.1 miles road running
  • Sun 14 Apr 2024
  • £35
Carmarthen, Dyfed, UK

The Pendine Races | Half Marathon

The Pendine Sands 5K & 10K are on the beach. The Half & Full Marathon take in the full length of the beach and then return along quiet lanes.

  • 13.1 miles trail running
  • Sat 27 Apr 2024
  • £47
Haverfordwest, Pembrokeshire, UK

EnduranceLife - Pembrokeshire | Half Marathon

As Britain's only coastal National Park primarily designated for its coastal landscape, Pembrokeshire is justifiably famous for its rugged cliffs, quiet coves, expansive sandy bays,

  • 13.4 miles trail running
  • Sat 4 May 2024
  • £52
Brecon, Powys, UK

TEC Brecon Beacons | Half Marathon

The Brecon Beacons Trail Running Challenge is now entering its 10th year in Talyboont-on Usk and is one of the most popular events on the trail running calendar in Wales.

  • 27.2 km trail running
  • Sat 4 May 2024
  • £25
Narberth, Pembrokeshire, UK

Pembrokeshire Trail | Half Marathon

Run Afan Forest is excited to announce a new event, Set in the breath-taking ancient woodlands of Minwear and Canaston Woods, right next-door to Bluestone Wales,

  • 13.1 miles trail running
  • Sun 12 May 2024
  • £37-£39
Llanrwst, Clwyd, UK

Snowdonia Half Marathon

One of The UK’s Toughest Half Marathon Warning! Warning! Warning! This is very tough! This is very tough!

  • 13.1 miles road running
  • Sat 18 May 2024
  • £45
Crickhowell, Powys, UK

Blacks to the Beacons | Half Marathon

Whether you’re a season Marathon and Ultra runner or this is your first attempt at a longer distance, we guarantee you will have an amazing day. The Blacks to the Beacons is part of our Trail Festival

  • 13.1 miles trail running
  • Sat 1 Jun 2024
  • £40
Brecon, Powys, UK

Midnight Mountain | Half Marathon

The Midnight Mountain Marathon is no ordinary marathon.

  • 13 miles fell running
  • Sat 8 Jun 2024
  • £45
Crickhowell, Powys, UK

Black Mountains | Half Marathon

Limitless Trails are very excited to be offering another Ultramarathon and Marathon in the beautiful Black Mountains, deep in the heart of the Brecon Beacons National Park.

  • 13.1 miles trail running + 2738 ft ascent
  • Sun 23 Jun 2024
  • £40
Pembroke, Pembrokeshire, UK

The Wales Half Marathon

Set in the beautiful Pembrokeshire Coast National Park...

  • 13.1 miles road running
  • Sun 14 Jul 2024
  • £42.99-£47.99
Caernarfon, Gwynedd, UK

XTERRA Snowdonia Trail Marathon Eryri | Half Marathon

Welcome to the XTERRA Snowdonia Trail Marathon Eryri, a stunning Trail Marathon, Ultra Marathon, Half Marathon and 10k, starting and finishing in Wales' outdoor capital, Llanberis.

  • 12.9 miles trail running
  • Sun 14 Jul 2024
  • £29.99
Carmarthen, Dyfed, UK

Brechfa Trail | Half Marathon

Run Afan Forest is thrilled to announce that the highly anticipated Brechfa Trail half marathon, 10k & 5k is back for 2024!

  • 13.1 miles trail running
  • Sat 14 Sep 2024
  • £32-£34
Pwllheli, Gwynedd, UK

Hopalong Clothing Abersoch Half Marathon and Fun Run | Half Marathon

The Hopalong Abersoch Half Marathon has a world-class course and superb atmosphere, great crowds and a stunning route set in the picturebook seaside village of Abersoch.

  • 13.1 miles road running
  • Sun 29 Sep 2024
  • £34
Haverfordwest, Pembrokeshire, UK

Pembrokeshire | Half Marathon

A 10k and a Half Marathon, both of which start and finish in the beautiful village of Dale.

  • 13.1 miles road running