Wales, UK · Half Marathon
Half Marathons in Wales, UK
Wales, UK currently has 28 upcoming half marathons with a confirmed date listed in RaceRove. Brecon, Cardiff, Carmarthen and Chepstow have the largest concentration of events.
November (6), May (5) and April (4) are the busiest months on the calendar right now. Another 3 annual half marathons are waiting for next year's date to be announced.
- Upcoming, date confirmed
- 28
- Active listings
- 31
- Cities with races
- 24
More ways to browse Wales, UK
Upcoming half marathons in Wales, UK
All 28 with a confirmed date, soonest first.
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Beacons Ultra, Marathon & Half MarathonBrecon, Wales~ 13 miles Half Marathon~ 26 miles Marathon~ 50 miles Ultra
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HOWL Heart of Wales Line Trail RaceCraven Arms, Wales16 miles / Half Marathon26 miles / Marathon50 miles Ultra
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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 half marathons happen in Wales, UK
- January
- 1 upcoming race
- March
- 3 upcoming races
- April
- 4 upcoming races
- May
- 5 upcoming races
- June
- 1 upcoming race
- July
- 3 upcoming races
- August
- 1 upcoming race
- September
- 2 upcoming races
- October
- 1 upcoming race
- November
- 6 upcoming races
- December
- 1 upcoming race
Wales cities with the most half marathons
- Brecon
- 3 upcoming races
- Cardiff
- 2 upcoming races
- Carmarthen
- 2 upcoming races
- Chepstow
- 2 upcoming races
- Swansea
- 2 upcoming races
- Aberdare
- 1 upcoming race
- Bridgend
- 1 upcoming race
- Burry Port
- 1 upcoming race
Annual events awaiting their next date
These half marathons are held every year, but the next date isn't in the listing yet. The month shown is when each is usually held.
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Bangor City 10K & Half MarathonBangor, Wales Usually held in October · next date not announced10KHalf Marathon
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Cardiff Half MarathonCardiff, Wales Usually held in October · next date not announcedHalf Marathon
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Ron Skilton Half Marathon & 12kmLlanwrtyd Wells, Wales Usually held in October · next date not announced12KHalf Marathon
Half Marathons in nearby regions
Guides from the RaceRove blog
- 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.
- 8 min read How to Choose the Best Half Marathon for a PR, Racecation or 50-State Challenge The best half marathon depends on what you want from it. How to choose a course for a personal record, a race worth travelling for, or an efficient stop on a 50-state challenge.
- 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.
Half Marathons in Wales, UK: common questions
- How many half marathons are there in Wales, UK?
- RaceRove currently lists 28 upcoming half marathons in Wales, UK with a confirmed date, plus 3 annual events whose next date hasn't been announced yet.
- How long is a half marathon?
- A half marathon is 13.1 miles (21.1 kilometres).
- Which Wales cities have the most half marathons?
- By upcoming events listed in RaceRove: Brecon (3), Cardiff (2), Carmarthen (2), Chepstow (2) and Swansea (2).
- When is half marathon season in Wales, UK?
- Of the upcoming half marathons listed, the busiest months are November (6), May (5) and April (4).
- What is the biggest half marathon in Wales, UK?
- By estimated field size, the largest event with a half marathon listed in Wales, UK is the Conwy Half Marathon, with about 4,000 runners across all of its distances.
Search every half 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.