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Cardiff Half Marathon 2025

Join us for one of Europe’s largest half marathons and an unforgettable atmosphere, all in support of people with cancer and their loved ones.

Date: 05 October 2025

Time: 10:00 am

Where: Castle Street, Cardiff CF10 3RB

Registration Fee: £10

Sponsorship target: £275

About the Cardiff Half Marathon

The Cardiff Half Marathon is the biggest running event in Wales and one of six European SuperHalfs, making it one of the most iconic half marathons in the world.

With a course that is flat and fast, the Cardiff Half Marathon is a great race for beginner and experienced runners alike. Many of the 27,000 runners choose to run for charity, guaranteeing an incredible atmosphere on the day.

The event is expected to sell out earlier than ever, so be sure to . 

Why run for ҹɫֱ²¥

Here at ҹɫֱ²¥ we are one big team, and we can't wait for you to join us! We will support you every step of the way, from helping you with fundraising inspiration to cheering for you on race day.

As a valued member of Team ҹɫֱ²¥, you will get:

  • a high-performance ҹɫֱ²¥ running vest for raising awareness in your training and on race day
  • encouragement and support on the day from one of the loudest cheer points on route
  • continued support, ideas and advice throughout your training and fundraising
  • the reassurance that you are making a difference to the lives of people with cancer and those who love them.

Sign up for a charity place

  •  to get your place in the Cardiff Half Marathon.
  • Fundraise a minimum of £275 for ҹɫֱ²¥ in the run up to the run. Our dedicated fundraising team will offer you tips and ideas to help you reach your target.

The route

The race takes place on the streets of Cardiff alongside the city’s landmarks of beautiful buildings and stunning natural scenery.

Starting at Cardiff Castle, the circular route takes you south past the Principality and Cardiff City Stadiums. You will run by the Penarth Marina and enjoy sensational views as you cross the Cardiff Bay Barrage barrage, passing the Norwegian Church and Wales Millennium Centre.

The course then heads north with a loop of Roath Park Lake, ready for a grandstand finish at the Civic Centre in the heart of the city.

Get in touch

For more information about this event or if you have any questions, please call us on  or email us at fundraisingcardiff@maggies.org

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