Cardiff Half Marathon 2026

Join our Cardiff Half marathon team and run with us on Sunday 4 October to help stop MS.

Our 13.1 mile route takes us through the capital of Wales. Starting at the historic Cardiff Castle, this flat and fast route guides you through the heart of the Welsh capital.

Our charity places have now sold out! But you can join our waiting list to keep up-to-date.

Join our waiting list

Join with your own place

If you already have your own place in this event, we would love to have you on our team! Sign up below to register and we will send you a running vest and fundraising pack. There is no minimum sponsorship target, just raise as much as you can.

Register with your own place

Your MS Superstar VIP Package 

When you fundraise with us you’ll receive:

  • a personalised MS Society running vest
  • a welcome pack including fundraising tips and materials
  • support from our dedicated events team to help you achieve your goal
  • the loudest cheer squads along the route

Read our events terms and conditions