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Cardiff Half Marathon 2025

The Principality Cardiff Half Marathon sees 20,000 people run through the Welsh capital, cheered on by thousands of spectators. Join #TeamMDUK and help support people with muscle wasting and weakening conditions.

Sign up now

The Cardiff Half Marathon is an iconic race, with a ‘hard to beat’ atmosphere. As part of the SuperHalfs Series, you can claim a stamp in your Superhalfs Passport when you complete the race.

What to expect

This flat and fast course starts outside Cardiff Castle and takes runners on a route that includes some of the capital’s most iconic and historic landmarks, such as Cardiff City Stadiums, Penarth Marina, the Norwegian Church and Wales Millenium Centre. Expect a grandstand finish at the Civic Centre, in the heart of the city.   

What we offer

By running for #TeamMDUK you’ll receive:

  • A welcome pack to get you started
  • A Muscular Dystrophy UK running vest
  • Access to training tips, information of preventing injury and nutrition advice
  • Support, ideas and tips to help you reach your fundraising target

Register for a place

Join #TeamMDUK and take on a half marathon in a city renowned for its sporting passion. Registration costs £30 and we ask that you commit to raising a minimum of £300.

Details
Date Sunday 5 October 2025 Location Cardiff, Wales Registration Fee £30 Minimum sponsorship £300 Sign up now

How your money helps

For over 60 years we’ve provided life-changing support for people living with muscle wasting and weakening conditions, funded groundbreaking research and campaigned for people’s rights, access to treatments and better understanding of why muscles matter.

By taking on the Cardiff Half Marathon and fundraising for us, you’ll help us to:

Hold free Information Days

for people who have been newly diagnosed with a muscle wasting or weakening condition 

Train our peer support volunteers

to share their lived experience and help others  

Fund vital research

into muscle wasting or weakening conditions 

Our helpline

Answer someone’s call via our free helpline 

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