Half marathons in Wales

Find half marathons in Wales in 2025/2026 - filter by date, location or category, 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 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-£33

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! Come and celebrate all things Spice Girls!

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! Come and celebrate all things Spice Girls!

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
£16-£35

Aberdare, Mid Glamorgan, UK

St Davids Day Dragon Run

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

Families
Beginner-friendly
Event village
Park
All ages

Trail run
5K run
10K run
Half marathon
Marathon
+ 3 more races

The most beautiful half marathon in North Wales! Flanked by breathtaking views of Eryri (Snowdonia), the beauty and uniqueness of this event is what draws people from all over the UK!

Sun 1 Mar 2026
£46.99-£49.99

Anglesey, Isle of Anglesey, UK

Jones o Gymru Anglesey Half Marathon

The most beautiful half marathon in North Wales! Flanked by breathtaking views of Eryri (Snowdonia), the beauty and uniqueness of this event is what draws people from all over the UK!

Chip timing
Enter online
Undulating
PB
Traffic free
Age 17 & over

13.1 miles road running + 224 m ascent

Come and join the Dashing Dog Charity run in the picturesque Dare Valley Country Park. Not only is the scenery beautiful but you will earn one of these awesome medals!

Sun 15 Mar 2026
£18-£38

Aberdare, Mid Glamorgan, UK

The Dashing Dog Charity Run | Wales

Come and join the Dashing Dog Charity run in the picturesque Dare Valley Country Park. Not only is the scenery beautiful but you will earn one of these awesome medals!

Families
Beginner-friendly
Event village
Park
All ages

Road run
5K run
10K run
Half marathon
Marathon
+ 3 more races

Gather on the summit of Moel y Parc at over 1300ft and follow the Offa's Dyke National Trail to the coast to finish line on the beach at Prestatyn.

Sun 12 Apr 2026
£33.50

Prestatyn, Clwyd, UK

Summit 2 Sea - The Offa's Dyke Half Marathon

Gather on the summit of Moel y Parc at over 1300ft and follow the Offa's Dyke National Trail to the coast to finish line on the beach at Prestatyn.

Beginner-friendly
Enter online
Hilly
Event village
Rural
Coast
Mountains
Age 17 & over

13.8 miles trail running + 2450 ft ascent

Didn't get a ballot entry into The London Marathon? Don't panic, come and experience this event instead and earn a fantastic London-themed medal!

Sun 26 Apr 2026
FREE-£35

Aberdare, Mid Glamorgan, UK

The Nearly But Not Quite London Marathon | Wales

Didn't get a ballot entry into The London Marathon? Don't panic, come and experience this event instead and earn a fantastic London-themed medal!

Families
Beginner-friendly
Event village
Park
All ages

Trail run
5K run
10K run
Half marathon
Marathon
+ 3 more races

Come and celebrate 50 years since the release of the iconic Rocky film! Have you got the Eye of The Tiger, the guts to get the glory and the will to rise up to the challenge and run?

Sat 30 May 2026
£18-£35

Aberdare, Mid Glamorgan, UK

Rocky at 50 Run | Wales

Come and celebrate 50 years since the release of the iconic Rocky film! Have you got the Eye of The Tiger, the guts to get the glory and the will to rise up to the challenge and run?