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Flat Half marathons in Wales
Find flat half marathons in 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
- £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!
- Road run
- 5K run
- 10K run
- Half marathon
- Marathon
- + 3 more races
- Sat 30 May
- £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?
- Road run
- 5K run
- 10K run
- Half marathon
- Marathon
- + 3 more races
- Sun 4 Oct
- £5-£60
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!
- 13.1 miles road running + 81 m ascent
- Sun 1 Mar
- £36-£42
Pwllheli, Gwynedd, UK
St Davids Day Celebration North Wales Pilgrims Half Marathon | Half Marathon
- 21 km trail running
- Sun 8 Mar
- £42
Burry Port, Dyfed, UK
Great Welsh Marathon Events | Half Marathon
- 13.1 miles road running + 240 ft ascent
- Sun 29 Mar
- £40-£42
Llandudno, Clwyd, UK
Llandudno Half Marathon & 10 Mile | Half Marathon
- 13.1 miles road running