National Energy Action

Cardiff Half Marathon

Date: 05th Oct 2025

Minimum Age: 17

CF10 3RB

The Cardiff Half Marathon has grown into one of the largest and most exciting road races in Europe. It is Wales’ largest mass-participation and multi-charity fundraising event and the second largest half in the UK. Its flat, fast course passes all the city’s most breath-taking scenery and iconic landmarks including Cardiff Castle, the Principality Stadium, Civic Centre and stunning Cardiff Bay. Thousands of spectators turn out to cheer on the runners in a city renowned for its sporting passion.

Cardiff Half Marathon

Our vision is to end fuel poverty. We work across England, Wales and Northern Ireland to ensure that everyone can afford to live in a warm home.

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Register for Cardiff Half Marathon

You will be charged £114.40 (£110.00 + Booking Fee) for your place.

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You will be charged £114.40 (£110.00 + Booking Fee) for your place
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