United Kingdom · WLS
Running Races in Wales, UK
Wales, UK currently has 65 upcoming races with a confirmed date listed in RaceRove. Brecon, Cardiff, Swansea and Caernarfon have the largest concentration of events.
By distance, that includes 8 5Ks, 24 10Ks, 28 half marathons and 18 marathons. Many events offer more than one distance, so a race can appear in more than one of those counts.
July (11), November (11) and April (10) are the busiest months on the calendar right now. Another 7 annual races are waiting for next year's date to be announced.
- Upcoming, date confirmed
- 65
- Active listings
- 72
- Cities with races
- 38
Browse Wales races by distance
Upcoming races in Wales, UK
The next 60 of 65 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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Slate Trail UltraBangor, WalesUltra Tour of the Quarries: 80K / 50 milesSlate Trail Ultra: 147K / 91 miles ~100 runners
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Trails & Tarmac Winter 12 Hour Back Yard UltraCrickhowell, Wales1 x 4.2 mile lap per hour for 11 laps - 12th lap is a sprint to finish
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Brecon to Cardiff Classic & XtremeCardiff, WalesClassic Ultra: 43 miles / 70KXtreme Mountain Ultra: 47 miles / 75K
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Barry Island 10KBarry, WalesToddler Dash (3 yrs & under) 50mJunior (8-17 yrs) 1 mileFamily 1 mile10K
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HOWL Heart of Wales Line Trail RaceCraven Arms, Wales16 miles / Half Marathon26 miles / Marathon50 miles Ultra
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Porthcawl 10KPorthcawl, WalesToddler Dash (3 yrs & under) 50mJunior (8-17 yrs) 1 mileFamily 1 mile10K
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Yr Wyddfa / Snowdon 24Caernarfon, WalesMultiple 15K laps - 24 Hour limit- Solo- Pairs relay- Team relay (max 5 people)
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Gower Peninsula Ultra ChallengeSwansea, WalesRefer to event website for schedule:10 miles25K50K - 2 courses +2 more
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Wye Valley Tunnel RunChepstow, WalesColourburst Run - 500m or 2K10KHalf Marathon - Valley View routeHalf Marathon - Tintern Station route +1 more
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Off The Tarmac Pen Y Fan ChallengeBrecon, Wales5 miles - elevation gain 1765ft / 538m13 miles - elevation gain 4097ft / 1248m
Dates come from each race's own listing. Always confirm on the organiser's site before you book travel.
Largest races in Wales, UK
By estimated field size across all distances at the event.
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Slate Trail UltraBangor, WalesUltra Tour of the Quarries: 80K / 50 milesSlate Trail Ultra: 147K / 91 miles ~100 runners
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The Loop UltraWelshpool, Wales Usually held in October · next date not announced32 miles / 50K ~100 runners
When races happen in Wales, UK
- January
- 1 upcoming race
- February
- 5 upcoming races
- March
- 3 upcoming races
- April
- 10 upcoming races
- May
- 10 upcoming races
- June
- 4 upcoming races
- July
- 11 upcoming races
- August
- 2 upcoming races
- September
- 5 upcoming races
- October
- 2 upcoming races
- November
- 11 upcoming races
- December
- 1 upcoming race
Wales cities with the most races
- Brecon
- 8 upcoming races
- Cardiff
- 5 upcoming races
- Swansea
- 5 upcoming races
- Caernarfon
- 3 upcoming races
- Abersoch
- 3 upcoming races
- Bridgend
- 2 upcoming races
- Caerphilly
- 2 upcoming races
- Carmarthen
- 2 upcoming races
Browse Wales races by month
Annual events awaiting their next date
These races 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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The Loop UltraWelshpool, Wales Usually held in October · next date not announced32 miles / 50K ~100 runners
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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
Races in nearby regions
Guides from the RaceRove blog
- 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.
- 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.
- Blog All guides Planning advice for finding, choosing and travelling to races.
Running Races in Wales, UK: common questions
- How many races are there in Wales, UK?
- RaceRove currently lists 65 upcoming races in Wales, UK with a confirmed date, plus 7 annual events whose next date hasn't been announced yet.
- Which Wales cities have the most races?
- By upcoming events listed in RaceRove: Brecon (8), Cardiff (5), Swansea (5), Caernarfon (3) and Abersoch (3).
- When is race season in Wales, UK?
- Of the upcoming races listed, the busiest months are July (11), November (11) and April (10).
- What is the biggest race in Wales, UK?
- By estimated field size, the largest race listed in Wales, UK is the Conwy Half Marathon, with about 4,000 runners across all of its distances.
Search every race 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.