Marathons in Wales
Find 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 26 Apr
- £15-£35
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!
- Trail run
- 5K run
- 10K run
- Half marathon
- Marathon
- + 3 more races
- Sat 30 May
- £14-£34
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 12 Jul
- £59.99-£64.99
Snowdonia Trail Marathon Eryri
The most epic trail marathon in Wales! Iconic and spectacular trails, circumnavigating then climbing the slopes of Wales' highest peak - Yr Wyddfa (Snowdon).
- 27.3 miles trail running + 1685 m ascent
- Sat 18 Jul
- £89
Gower Peninsula Ultra Challenge | Marathon 42K Loop
A classic distance from Penrice Castle on a loop featuring Oxwich Bay and its nature reserve, the stunning Wales Coast Path, picnic at Rhossili, the Gower Way then a celebration and medal!
- 42 km multi terrain running + 900 m ascent
- Sat 25 Jul
- £14-£34
Ooops I Ran It Again | Wales
Who hasn't completed a race, sworn they will never run again and then booked onto another one the following day?!
- Road run
- 5K run
- 10K run
- Half marathon
- Marathon
- + 3 more races
- Sat 15 Aug
- £44-£45
Run to the Castle Ultra | Marathon
Take on a stunning marathon journey along the Welsh coastline, from Aberdyfi to finish in style in Barmouth. It's an unforgettable challenge packed with scenery, heritage, and adventure.
- 26.2 miles multi terrain running
- Sat 22 Aug
- £22-£34
Great British Bake Run | Wales | 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!
- 26.2 miles road running
- Sun 6 Dec
- £49.50
Sea 2 Summit | Offa's Dyke Full Marathon
The only way is up with this race along the Offas Dyke footpath. The scenery and terrain become more and more beautiful, and challenging as you go!
- 26.2 miles trail running
- Sun 20 Dec
- £27-£40
The Snow Globe Gallop Bobble Hat Run | Wales | Marathon
Come and join the Christmas Carol Bobble Hat Marathon in the picturesque Dare Valley in Wales! At this event you can earn yourself a running buff as well as one of the incredible themed medals!
- 26.2 miles trail running
- Sat 25 Apr
- £59
EnduranceLife - Pembrokeshire | Marathon
- 27.3 miles trail running + 3067 ft ascent
- Sat 9 May
- £50
Radyr Trail Races: Half Marathon and Marathon | Marathon
- 26.2 miles trail running
- Sat 16 May
- £55-£57
OTT Trail Marathon & 10 Mile Trail Run Brecon Beacons | Marathon
- 26.2 miles trail running