Little Hearts Matter

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

Little Hearts Matter is the only charity in the UK dedicated to supporting and empowering anyone affected by the diagnosis of a single ventricle heart condition – or half a working heart. We support families along every step of their journey, from initial diagnosis, through treatments and into life at home.

Read More

Register for Cardiff Half Marathon

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

Full Name *

Email Address *

Contact Number *

Post Code *

Date of Birth *

Gender *

Credit/Debit Cardholder Name *

Credit/Debit Card Details *

Total Cost

You will be charged £114.40 (£110.00 + Booking Fee) for your place
Only click on the Register button once.
Do not exit this page until the transaction completes OR you are redirected to another page.