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Home > News & events > Fundraising events > Cardiff Half Marathon 2026
The Oysho Cardiff Half Marathon has grown into one of the largest and most exciting road races in the United Kingdom, and is truly a Race For Everyone. It is now one of Europe’s largest half marathons and is Wales’ largest mass participation event!
Its flat, fast course passes all the city’s most breathtaking 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.
Run the Cardiff Half Marathon for Breakthrough T1D and help to raise funds for type one diabetes (T1D) research, bringing us one step closer to a cure.
Register for one of our charity places in the Cardiff Half Marathon 2026 and join Team Breakthrough T1D:
Registration fee: £35 plus a small booking fee Minimum sponsorship target: £350
Sign up now
If you secure your own place with the race organisers or your running club, we’d be delighted to have you join Team Breakthrough T1D and we’ll support you every step of the way.
You’ll receive all the benefits of a charity place runner – with no minimum sponsorship requirement!
Register your own place
Our support includes:
*Your Breakthrough T1D running vest will be sent to you once you create your fundraising page.
For more information, email Holly Cummings, Challenge and Sports Events Fundraiser.
Join us for the Oysho Cardiff Half Marathon and help improve the lives of those living with T1D.
If this event doesn’t quite fit the bill, there are loads more to choose from. Have a browse of our other running events:
Run the only 10K in the capital to finish outside Buckingham Palace, with breathtaking views of London along the way.
Take on the world’s fastest and flattest marathon event, while taking in the amazing sites of Berlin.
Run on closed roads past many of London's world-famous landmarks and through four of its eight Royal Parks.
Part of the famous World Marathon Majors, the Chicago Marathon is a famously fast and flat course.
Don’t miss out on the latest research, inspiring stories, tech news, upcoming events, and handy information on living well with type 1. Join us now and receive it all straight to your inbox.
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