Half marathons in Wales

Find half marathons near me in Wales for 2025/2026 - filter by date or location, display on a map or use the advanced search to find your perfect race.

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Welcome to a 7-hour timed running event where you can run a half marathon at your own pace on a looped route, with fuel stations each lap, and a medal and goody bag at the finish.

Sat 20 Sep
£22-£35

Aberdare, Mid Glamorgan, UK

Fraggle Run | Wales | Half Marathon

Welcome to a 7-hour timed running event where you can run a half marathon at your own pace on a looped route, with fuel stations each lap, and a medal and goody bag at the finish.

Enter online
Traffic free
Age 17 & over

13.1 miles trail running

Entries closed

An iconic road race around Wales' capital offering a flat course from the castle to the marina and over the Cardiff Bay barrage!

Sun 5 Oct
FREE-£45

Cardiff, South Glamorgan, UK

Oysho Cardiff Half

An iconic road race around Wales' capital offering a flat course from the castle to the marina and over the Cardiff Bay barrage!

Families
Carbon offset
Wheelchair users
Recycling
Entertainment
Music
Chip timing
Enter online
Flat
PB
Traffic free
Fancy dress
Event village
Urban
Coast
Sustainability policy
Public transport links
Age 17 & over

13.1 miles road running + 81 m ascent

Get involved in this spooky half marathon! The Care Bears were a staple of anyone who grew up in the 80s and even if you didn't like them, they make a super cute (slightly scary) medal to earn.

Sat 18 Oct
£22-£35

Aberdare, Mid Glamorgan, UK

Scare Bear Run | Wales | Half Marathon

Get involved in this spooky half marathon! The Care Bears were a staple of anyone who grew up in the 80s and even if you didn't like them, they make a super cute (slightly scary) medal to earn.

Enter online
Traffic free
Age 17 & over

13.1 miles road running

MoRunning brings everyday people together with the focus being to inspire you, your family, your kids and your friends to have the best time running! Get ready for the half marathon, Cardiff!

Sat 8 Nov
£30-£35

Cardiff, UK

Cardiff MoRun | Half Marathon

MoRunning brings everyday people together with the focus being to inspire you, your family, your kids and your friends to have the best time running! Get ready for the half marathon, Cardiff!

Chip timing
Enter online
Flat
Age 17 & over

13.1 miles road running

Come and join the day of running and aim to complete a half marathon at your own pace on a scenic course then receive a fantastic Smurf-themed medal and goody bag at the finish!

Sat 22 Nov
£22-£35

Aberdare, Mid Glamorgan, UK

Smurf Run | Wales | Half Marathon

Come and join the day of running and aim to complete a half marathon at your own pace on a scenic course then receive a fantastic Smurf-themed medal and goody bag at the finish!

Enter online
Traffic free
Age 17 & over

13.1 miles trail running + 0 ft ascent

The only way is up with this race along the Offas Dyke footpath. The scenery and terrain become more and more beautiful, and challenging as you go!

Sun 7 Dec
£31.50

Prestatyn, Clwyd, UK

Sea 2 Summit | Offa's Dyke Half Marathon

The only way is up with this race along the Offas Dyke footpath. The scenery and terrain become more and more beautiful, and challenging as you go!

Chip timing
Enter online
Age 17 & over

13.1 miles trail running

Welcome to a 7-hour timed running event where you can run a half marathon at your own pace on an out-and-back route, with fuel stations each lap, and a bobble hat, medal and goody bag at the finish.

Sun 21 Dec
£27-£40

Aberdare, Mid Glamorgan, UK

A Christmas Carol Bobble Hat Run | Wales | Half Marathon

Welcome to a 7-hour timed running event where you can run a half marathon at your own pace on an out-and-back route, with fuel stations each lap, and a bobble hat, medal and goody bag at the finish.

Enter online
Age 17 & over

13.1 miles road running

If you're looking to spice up your run or you need some running like you've never needed running before, then this is the event for you!

Sat 24 Jan 2026
£33-£35

Aberdare, Mid Glamorgan, UK

Spice Up Your Run - Wales | Half Marathon

If you're looking to spice up your run or you need some running like you've never needed running before, then this is the event for you!

Enter online
Age 17 & over

13.1 miles trail running + 1014 ft ascent

Come and get involved in the second St David's Day Dragon Run in the beautiful Dare Valley Country Park in, of course, Wales!

Sun 1 Mar 2026
£22-£35

Aberdare, Mid Glamorgan, UK

St Davids Day Dragon Run | Half Marathon

Come and get involved in the second St David's Day Dragon Run in the beautiful Dare Valley Country Park in, of course, Wales!

Enter online
Age 17 & over

13.1 miles trail running

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 1 Mar 2026
£44.99-£49.99

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.