Wales, UK · Half Marathon
Cardiff Half Marathon
Cardiff Half Marathon is a half marathon event held in Cardiff, Wales, UK. It was last held on October 4, 2026 and is usually run in October; the next date hasn't been announced yet.
- Usually held
- October
- Location
- Cardiff, Wales
Race details
- Last held
- October 4, 2026
- Usually held in
- October
- Location
- Cardiff, Wales, UK
- Distances
- Half Marathon
- Registration
- cardiffhalfmarathon.co.uk
- Official website
- cardiffhalfmarathon.co.uk
Registration, course & weather
- Registration status
- Registration status as last checked September 29, 2026: sold out
- Start time
- 10:00 AM
- Course profile
- Point-to-point course; Road surface
- Typical race-day weather
- about 55°F at the start, 74% humidity, 13 mph wind (based on the 2025 race day, measured near the city center rather than the exact start line; Open-Meteo, checked September 29, 2026)
About the Cardiff Half Marathon
A large, flat and fast road half marathon through Wales' capital, starting outside Cardiff Castle and finishing at the Civic Centre after passing Penarth Marina, the Cardiff Bay barrage and Roath Park Lake. It is the UK stop on the SuperHalfs series.
More half marathons in Wales, UK
Coming up next, by confirmed date.
-
Beacons Ultra, Marathon & Half MarathonBrecon, Wales~ 13 miles Half Marathon~ 26 miles Marathon~ 50 miles Ultra
More races in Cardiff
-
Brecon to Cardiff Classic & XtremeCardiff, WalesClassic Ultra: 43 miles / 70KXtreme Mountain Ultra: 47 miles / 75K
More upcoming races in Wales, UK
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Slate Trail UltraBangor, WalesUltra Tour of the Quarries: 80K / 50 milesSlate Trail Ultra: 147K / 91 miles ~100 runners
-
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
Keep exploring
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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.
Cardiff Half Marathon: common questions
- When is the Cardiff Half Marathon?
- The next date hasn't been announced in the listing yet. The race is usually held in October. Check the organiser's website for the official date.
- Where is the Cardiff Half Marathon held?
- In Cardiff, Wales, UK.
- What distances does the Cardiff Half Marathon offer?
- Half Marathon.
- How do I register for the Cardiff Half Marathon?
- Registration is handled by the organiser at cardiffhalfmarathon.co.uk. Entry fees, caps and deadlines are set there.
- Is registration open for the Cardiff Half Marathon?
- Registration status as last checked September 29, 2026: sold out. $58 (from cardiffhalfmarathon.co.uk, checked September 29, 2026).
- What time does the Cardiff Half Marathon start?
- 10:00 AM.
- What is the course like at the Cardiff Half Marathon?
- Point-to-point course; Road surface.
- What is race-day weather usually like at the Cardiff Half Marathon?
- about 55°F at the start, 74% humidity, 13 mph wind (based on the 2025 race day, measured near the city center rather than the exact start line; Open-Meteo, checked September 29, 2026).
Plan this race in RaceRove
Save it to your plan, compare it with other races and check typical race-day weather in the interactive app.