Wales, UK · Marathon
Marathons in Wales, UK
Wales, UK currently has 18 upcoming marathons with a confirmed date listed in RaceRove. Brecon, Cardiff, Carmarthen and Merthyr Tydfil have the largest concentration of events.
April (4), November (4) and May (3) are the busiest months on the calendar right now. Another 1 annual marathon is waiting for next year's date to be announced.
- Upcoming, date confirmed
- 18
- Active listings
- 19
- Cities with races
- 15
More ways to browse Wales, UK
Upcoming marathons in Wales, UK
All 18 with a confirmed date, soonest first.
-
Beacons Ultra, Marathon & Half MarathonBrecon, Wales~ 13 miles Half Marathon~ 26 miles Marathon~ 50 miles Ultra
-
HOWL Heart of Wales Line Trail RaceCraven Arms, Wales16 miles / Half Marathon26 miles / Marathon50 miles Ultra
-
Wye Valley Tunnel RunChepstow, WalesColourburst Run - 500m or 2K10KHalf Marathon - Valley View routeHalf Marathon - Tintern Station route +1 more
Dates come from each race's own listing. Always confirm on the organiser's site before you book travel.
When marathons happen in Wales, UK
- March
- 1 upcoming race
- April
- 4 upcoming races
- May
- 3 upcoming races
- June
- 1 upcoming race
- July
- 3 upcoming races
- October
- 1 upcoming race
- November
- 4 upcoming races
- December
- 1 upcoming race
Wales cities with the most marathons
- Brecon
- 2 upcoming races
- Cardiff
- 2 upcoming races
- Carmarthen
- 2 upcoming races
- Merthyr Tydfil
- 2 upcoming races
- Aberdare
- 1 upcoming race
- Bridgend
- 1 upcoming race
- Burry Port
- 1 upcoming race
- Caerphilly
- 1 upcoming race
Annual events awaiting their next date
These marathons are held every year, but the next date isn't in the listing yet. The month shown is when each is usually held.
Marathons in nearby regions
Guides from the RaceRove blog
- 8 min read How to Choose Your First Marathon A practical checklist for choosing a first marathon based on course, weather, cutoff, travel, field size and support.
- 7 min read How to Find a 5K, 10K, Half Marathon or Marathon Near You A practical way to find running races near you: pick a distance, decide how far you'll travel, read the listing properly and confirm the details before you register.
- 4 min read Diplo's Run Club 2026-27: Every City, Date and Course Diplo's Run Club is a 5K with a post-race concert. Every US date for 2026-27 (San Francisco, New York, Los Angeles, San Diego and Phoenix), start times and courses.
- Blog All guides Planning advice for finding, choosing and travelling to races.
Marathons in Wales, UK: common questions
- How many marathons are there in Wales, UK?
- RaceRove currently lists 18 upcoming marathons in Wales, UK with a confirmed date, plus 1 annual event whose next date hasn't been announced yet.
- How long is a marathon?
- A marathon is 26.2 miles (42.2 kilometres).
- Which Wales cities have the most marathons?
- By upcoming events listed in RaceRove: Brecon (2), Cardiff (2), Carmarthen (2), Merthyr Tydfil (2) and Aberdare (1).
- When is marathon season in Wales, UK?
- Of the upcoming marathons listed, the busiest months are April (4), November (4) and May (3).
Search every marathon in Wales, UK
Filter by month, course profile and field size, save races to a shortlist and compare them side by side in the interactive search.