Road Half marathons in South Wales
Find road half marathons in South Wales in 2026/2027 - filter by date, location or category, display on a map or use the advanced search to find your perfect race.
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- Sun 15 Mar
- £24-£39
The Dashing Dog Charity Run | Wales | Half Marathon
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 for your half marathon!
- 13.1 miles road running
- Sat 30 May
- £22-£34
Rocky at 50 Run | Wales | Half Marathon
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 a half marathon?
- 13.1 miles road running
- Sat 6 Jun
- £30-£35
Conquer Cardiff Summer | Half Marathon
It's time to conquer the Cardiff Summer Half Marathon, have a morning out with family, friends, or colleagues and enjoy the stunning Bute Park then receive your superb medal!
- 13.1 miles road running
- Sat 25 Jul
- £22-£34
Ooops I Ran It Again | Wales | Half Marathon
Who hasn't completed a race, sworn they will never run again and then booked onto another one the following day?!
- 13.1 miles road running
- Sat 22 Aug
- £22-£34
Great British Bake Run | Wales | Half Marathon
Who doesn't like cake?! The Great British Bake Run is back for another year with a totally unique baking competition with prizes on the day too!
- 13.1 miles road running
- Sun 4 Oct
- £5-£60
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!
- 13.1 miles road running + 81 m ascent
- Sun 1 Nov
- £25-£35
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!
- 13.1 miles road running
- Sun 22 Mar
- £37-£42
The Merthyr Half Marathon | Half Marathon
- 13.1 miles road running