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Marathon directory
Marathons in Wales, United Kingdom
2 upcoming marathons listed in Wales across 2 cities. Next: Cardiff Half Marathon on October 4, 2026.
2marathons upcoming
2cities
October 4, 2026Next race
Marathon, Half marathonDistances
Cardiff, Wales, United Kingdom
04OCT
21.1K
Cardiff Half Marathon
Cardiff, Wales, United Kingdom
Certified
Llanberis, Wales, United Kingdom
24OCT
42.2K
Marathon Eryri
Llanberis, Wales, United Kingdom
Certified
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Cities listed in Wales
Planning notes for Wales, United Kingdom
Use this region page to shortlist 2 upcoming races by date, distance, registration path, and official source.
- Next raceCardiff Half Marathon on October 4, 2026
- Busy monthsOctober (2)
- DistancesMarathon, Half marathon
- VerifyOpen each race page, then confirm details from its official, registration, course-map, or source link.