12 Half marathons in North Wales

Find half marathons in and around North Wales for 2024/2025 - search by date or place, display on a map or use the advanced search to find your perfect race.

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Click an event for full event details, location, route, sustainability, what's included and how to enter.

Wales' spectacular mountain half marathon! A tough route with over 1,192m of ascent, most of which is up Wales’ highest peak, with incredible views all the way to Anglesey and a downhill finish too.
  • Sun 14 Jul
  • £45.99-£47.99
Caernarfon, Gwynedd, UK

XTERRA Snowdonia Trail Half Marathon Eryri

Wales' spectacular mountain half marathon! A tough route with over 1,192m of ascent, most of which is up Wales’ highest peak, with incredible views all the way to Anglesey and a downhill finish too.

  • 12.9 miles trail running
A top class half marathon event on a challenging and scenic trail around Llyn Elsi that is friendly, inclusive, sustainable, runner-focused, fun and rewarding. Come and see what the fuss is about!
  • Sat 30 Nov
  • £33
Betws-y-Coed, Clwyd, UK

Betws-y-coed Trail Challenge | Half Marathon

A top class half marathon event on a challenging and scenic trail around Llyn Elsi that is friendly, inclusive, sustainable, runner-focused, fun and rewarding. Come and see what the fuss is about!

  • 13.1 miles trail running
  • Sun 14 Apr
  • 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
  • £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 12 May
  • £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
  • Sun 12 May
  • £40
Mold, Clwyd, UK

Excalibur Marathon | Half Marathon

Altitude with Attitude Marathon/Half/10K over 5,500ft of Ascent

  • 13.1 miles trail running
  • Sun 2 Jun
  • £35
Tywyn, Gwynedd, UK

Cadair X

Possibly the toughest half marathon in the UK, and the most awe-inspiring.

  • 13.1 miles trail running
  • Sat 15 Jun
  • £35
Dolgellau, Gwynedd, UK

Salomon | Trail Half Hanner

Taking place in 2024, the Salomon Trail Marathon Wales and Trail Half Hanner will have full (26 mile / 42km) and half (13mile / 21 km) marathon race routes...

  • 13 miles trail running
  • Sat 29 Jun
  • £54
Conwy, Clwyd, UK

Snowdonia Race | Half Marathon

Explore majestic Snowdonia National Park! Trail Half Marathon, 10K & Kids 1 mile. +Yoga, festivities & camping!

  • 13.1 miles trail running
  • Sat 6 Jul
  • £48
Caernarfon, Gwynedd, UK

TEC Eryri The Crossing | Half Marathon

Eryri (Snowdonia) The Crossing 2024

  • 21.45 km trail running
  • Sat 7 Sep
  • £26
Caernarfon, Gwynedd, UK

Marathon Creulon | Half Marathon

This amazing route takes you on an undulating trail run around the lake and then up and down Wales's highest mountain, Yr Wyddfa (Snowdon).

  • 13.1 miles trail running
  • Sat 14 Sep
  • £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

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