Marathons in South Wales

Find marathons near me in South 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 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 | Marathon

Welcome to a 7-hour timed running event where you can run a 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 18 & over

26.2 miles trail running

Get involved in this spooky 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 | Marathon

Get involved in this spooky 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 18 & over

26.2 miles road running

Come and join the day of running and aim to complete a 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 | Marathon

Come and join the day of running and aim to complete a 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 18 & over

26.2 miles trail running + 0 ft ascent

Welcome to a 7-hour timed running event where you can run a 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 | Marathon

Welcome to a 7-hour timed running event where you can run a 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.