Run like you've never run before in this iconic, fast-paced and flat road race around the Welsh Capital and help raise funds for seriously ill children.
The Cardiff Half Marathon is the second biggest in the UK and is part of the SuperHalfs Half Marathon series. The route takes you past beautiful scenery and the city’s most iconic landmarks including Cardiff Castle. The predominately flat and fast course makes it ideal for beginners and elites. You can be sure to expect a carnival atmosphere at this event in the vibrant Welsh capital.
Event details
Half marathon
Sunday 05 October 2025
Cardiff, Wales
Fundraising pledge: £350
Registration fee: £20
2025 Charity places
Secure your place on the start line by registering for one of our charity places today.
- Registration fee: £20
- Fundraising target: £350 (excluding Gift Aid)
Already have a Cardiff Half 2025 place?
If you have already secured your own place directly through the organisers, we'd love for you to join our team and fundraise to help seriously ill children at Great Ormond Street Hospital (GOSH).
There is no minimum fundraising commitment; we would only ask you to raise what you can. Both charity place and own place runners receive the same amazing support from our dedicated team.
Why we need you
Great Ormond Street Hospital Children’s Charity (GOSH Charity) needs your support more than ever. By fundraising, you'll help to fund:
- groundbreaking research
- advanced equipment
- children and family support services
- the rebuilding and refurbishment of wards and medical facilities within the hospital.
Take on the Cardiff Half for GOSH Charity and you'll receive:
a free GOSH Charity running top
a digital welcome pack full of tips, advice and fundraising materials
access to professional training plans
dedicated support from GOSH Charity's Challenge Events team