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Marathons in Wales in March 2026
Find marathons in Wales in March 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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- Sun 1 Mar
- £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!
- Trail run
- 5K run
- 10K run
- Half marathon
- Marathon
- + 3 more races
- 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
- Sun 8 Mar
Burry Port, Dyfed, UK
Great Welsh Marathon Events | Full Marathon
- 26.2 miles road running + 363 ft ascent
- Sat 14 Mar
Carmarthen, Dyfed, UK
Brechfa Trail Races: Half Marathon & Marathon | Marathon
- 26 miles trail running