5
Half marathons with PB potential in Wales
Find half marathons with pb potential in Wales in 2025/2026 - filter by date, location or category, display on a map or use the advanced search to find your perfect race.
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- Sun 1 Mar 2026
- £44.99-£49.99
Anglesey, Isle of Anglesey, UK
Jones o Gymru Anglesey Half Marathon
The 'UK's most beautiful Half Marathon'! Fast run flanked by breathtaking views of Snowdonia National Park and the Menai Straits. It's no wonder this race has become a firm favourite.
- Chip timing
- Enter online
- Undulating
- PB
- Age 17 & over
- 13.1 miles road running + 889 ft ascent
- Sun 4 Oct 2026
- £58
- 2 charities
Cardiff, South Glamorgan, UK
Oysho Cardiff Half
An iconic road race around Wales' capital offering a flat course from the castle to the marina and over the Cardiff Bay barrage!
- Families
- Carbon offset
- Wheelchair users
- Recycling
- Entertainment
- Music
- Chip timing
- Enter online
- Flat
- PB
- Traffic free
- Fancy dress
- Event village
- Urban
- Coast
- Sustainability policy
- Public transport links
- Age 17 & over
- 13.1 miles road running + 81 m ascent
- Sun 16 Nov
Conwy, Clwyd, UK
Conwy Half Marathon | Half Marathon
- 13.1 miles road running + 1247 ft ascent
- Sun 8 Feb 2026
Llanelli, Dyfed, UK
Llanelli 10K & Half Marathon | Half Marathon
- 13.1 miles road running + 58 m ascent
- Sun 8 Mar 2026
Burry Port, Dyfed, UK
Great Welsh Marathon Events | Half Marathon
- 13.1 miles road running + 240 ft ascent