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.

Entries for the 2026 event are now open!

Join #TeamSRUK and make a real difference to the lives of those living with Scleroderma and Raynaud’s.

How we’ll support you

As part of Team SRUK, you’ll have access to:

  • A dedicated fundraiser on hand to provide personalised fundraising support and answer any questions you may have
  • A fundraising guide with top tips and ideas to help you reach your fundraising target
  • A free colourful SRUK running vest to help raise awareness of our cause
  • The opportunity to share your stories and successes through our social media channels

Ready to book your space?

Sign up here, via our friends at Run for Charity.

Got your own space?

If you've got a space in the Cardiff Half, and would like to represent SRUK, then get in touch below. We can send you a running top, and full support in the lead-up. You'll have no fundraising target, and every penny you raise will go towards supporting people living with Scleroderma and Raynaud's.

About You

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What fundraising are you doing?

Please let us know what fundraising activity you're planning to do
You can change your communication preferences at any time by contacting us on 020 3893 5998 or at [email protected]. We will never sell or swap your details for marketing purposes.