Course
Half Marathon21.1 km
Key dates
- ✓Entries openedThu 1 Oct 2026
- ✓Entries closedSun 18 Oct 2026
- ★Race daySun 3 Oct 2027
Date confirmed with the organiser · entry window checked by RunCalendar
About
The Cardiff Half Marathon is a premier running event in the United Kingdom. The course takes runners through the heart of the vibrant city, showcasing its historic landmarks and scenic waterfront. With a lively atmosphere and enthusiastic spectators, this event offers a truly memorable experience for both elite athletes and recreational runners.
Your next race, seen from above.
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Save Cardiff Half Marathon to your season and RunCalendar reminds you the morning entries open and before they close. Free on iPhone, no account needed.
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A confirmed date shows its day; a provisional one shows only its month, because we won't claim a day we don't have. This page is rebuilt every night from the RunCalendar catalogue.