Cardiff Half Marathon 2027
Cardiff, United Kingdom
The course
A flat, fast, fully closed-road loop course through Cardiff, Wales. It starts outside Cardiff Castle on Castle Street, heads past the Principality Stadium and Cardiff City Stadium toward Penarth Marina, crosses the Cardiff Bay Barrage, and runs through Cardiff Bay past the Norwegian Church and Wales Millennium Centre. The route then heads north for a loop around Roath Park Lake before finishing in the Civic Centre outside the Temple of Peace.
Course summary source: barnardos.org.uk
Course map & elevation
No GPS track for this course yet.
We haven't mapped the Cardiff Half Marathon route yet. Elevation data will appear here once a licensed or organizer-verified course map is available.
Training for the Cardiff Half Marathon?
Coach Icarus builds your plan around your fitness, your schedule, and this course's elevation.
Race-week weather
Typical high
16°C
Typical low
10°C
Year-to-year swing
±1.4°C
Rain
4.9 mm/day
Based on 2020-2025 of race-week history, with peak gusts around 22 km/h.
Difficulty
Race facts
- Official race site
- cardiffhalfmarathon.co.uk ↗
- Start time
- 10:00
- Field size
- 27,500 finishers (2025)
- Boston qualifier
- No
Distances: 21.1 km
Training for the Cardiff Half Marathon?
Coach Icarus builds your plan around your fitness, your schedule, and this course's elevation.
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