Cardiff Half Marathon 2026

The Cardiff Half Marathon is a fast and flat half marathon, with a route that takes you past the famous Principality Stadium, down to Cardiff Bay, and finishes in the majestic Civic Centre.

Run towards a future free from arthritis

Location: Cardiff 
Date: Sunday 4 October 2026 
Cost: £40
Minimum sponsorship target: £300

Join over 27,500 runners for the UK’s second-largest half marathon. Known for its flat, fast, and iconic course, the Cardiff Half Marathon is the ultimate stage for chasing a personal best or completing your very first 13.1-mile challenge.

Cardiff isn't just a race; it's a global event. As a member of the prestigious SuperHalfs international series, Cardiff sits alongside Lisbon, Prague, Berlin, Copenhagen, and Valencia on the global Half Marathon stage.

Be part of this incredible half marathon, whilst also supporting Arthritis UK and a future free from arthritis. 

I would like a charity place

Thank you for wanting to join Team Arthritis UK for the Cardiff Half Marathon 2026. Secure your place with our partners Run for Charity. 

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I have my own place

Congratulations on securing your place directly with the Cardiff Half Marathon organisers! Thank you for choosing to join Team Arthritis UK and for supporting a future free from arthritis. 

Simply click the button, fill in the form and we'll be in touch.

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What to expect as an Arthritis UK runner

  • An Arthritis UK running vest or running t-shirt
  • An official welcome pack full of helpful training and fundraising advice
  • Dedicated training and fundraising support from our expert team
  • Access to our closed Facebook group of our community of supporters
  • A finisher’s medal from the organiser

 

More information

Contact us

There's much more information about the route on the Cardiff Half Marathon 2026 website but you can also contact our team at fundraising@arthritis-uk.org with questions or to get support. 

Thank you for supporting Arthritis UK.