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Marathons in Cardiff, Wales
1 upcoming marathon listed in Cardiff. Next: Cardiff Half Marathon on October 4, 2026.
1marathon upcoming
Cardiffcity
October 4, 2026Next race
Half marathondistances
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Planning notes for Cardiff, Wales, United Kingdom
Use this city page to shortlist 1 upcoming race by date, distance, registration path, and official source.
- Next raceCardiff Half Marathon on October 4, 2026
- Busy monthsOctober (1)
- DistancesHalf marathon
- VerifyOpen each race page, then confirm details from its official, registration, course-map, or source link.