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Take part in Wales’ largest mass participation event by running the Cardiff Half Marathon.

The flat, fast-paced Cardiff Half Marathon route passes the city’s most breath-taking scenery and iconic landmarks. Along the way, enjoy sights like Cardiff Castle, Principality Stadium, Civic Centre, and the stunning Cardiff Bay.

I absolutely love the Cardiff Half Marathon route. It's definitely one of the most scenic that I've run. I have 10+ half marathons so far and this year it was the best supported one. Thank to you all at Action for Children for all of the support. I will be back again next year!

H Jones
Take on the challenge

And help us reach more vulnerable children across the UK

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Have your own place?

You can use your own place to fundraise for Action for Children

Join us

Why take part?

As well as taking part in an incredible event, you’ll be helping more children to have safe and happy childhoods and the foundations they need to thrive. We ask for a £30 registration fee to secure your place and a minimum fundraising target of £300.

In return, you’ll get:

  • A free running vest to wear on race day
  • Dedicated support from our fundraising experts
  • The opportunity to join our Strava and Facebook groups.

Sign up information

Registration fee: £30
Minimum fundraising target: £300

Complete the form below to register your interest in the Cardiff Half Marathon with Action for Children. We'll email you with details on how to get signed up and welcome you to the team!

If you have any questions about the Cardiff Half Marathon or how to sign up and start fundraising, email [email protected].