Cardiff Half Marathon
An iconic road race around Wales' capital offering a flat course from the castle to the marina and over the Cardiff Bay barrage!
- Sun 5 Oct 2025
Cardiff Half Marathon
10:00
Age 17 & over
FREE-£30
- 13.1 miles road running
Event overview
Recognised by World Athletics as one of the best half marathons in the world!
Also a member of the global SuperHalfs series, Cardiff Half is now one of Europe’s most prestigious half marathons attracting 29,000 runners of all abilities alongside world-class athletes.
Starting at the castle, the half marathon route takes in city landmarks before crossing the barrage and heading to Cardiff Bay on a mostly flat course.
Highlights
-
A World Athletics Elite Road Race
The only half marathon in the UK to have this credential.
-
Part of the SuperHalfs series
A prestigious global series of half marathons including Lisbon, Prague, Copenhagen and Valencia.
-
UK's second-largest half marathon
Following the Great North Run, and attracting 29,000 runners.
-
Huge charity fundraiser
Join the thousands of runners challenging themselves to 13.1 miles for a great cause.
-
landmarks, buildings, scenery
The flat route features the castle, marina and the very exciting Cardiff Bay barrage!
-
Weekend festival for all
Runners' Village, live music throughout and huge spectator support.
Event details
- Event village
- Families
- Fancy dress
- Spectators
- Traders at event
- Wheelchair users
Location
- Bag storage
- Bar
- Cafe
- Changing facilities
- Coast
- Entertainment
- Music
- Paid parking
- Showers
- Toilets
- Urban
Route
- Cut off time
- Distance markers
- Entertainment
- First aid
- Flat
- Marshals
- No headphones
- Out and back
- PB
- Sweeper
- Traffic free
- Water stations
Sustainability
- Carbon offset
- Public transport links
- Recycling
- Sustainability policy
What's included
- Cash prizes
- Chip timing
- Eco goody bag
- Eco medal
- Event app
- Technical t-shirt
- Training plan
- Vouchers
Charity places
These charities have places in the event. To secure your place, select a charity and provide your details.
All charity places
Disability
Mencap
Helping people with a learning disability to live their lives as they choose.
- Running vest
- Fundraising support
- Fundraising materials
- Dedicated contact
Sign up
£15
Fundraise
£200
Free sign up
Heart
Cardiomyopathy UK
Providing information and support to sufferers of this incurable disease which could affect anyone of any age.
- Running vest
- Fundraising support
- Fundraising materials
- Training guide
Sign up
FREE
Fundraise
£350
Health and Medical
DEBRA
Providing care and support to those affected by the painful genetic skin condition Epidermolysis Bullosa (EB), which could affect any one of us.
- Running vest
- Fundraising support
- Fundraising materials
- Dedicated contact
Sign up
£15
Fundraise
£300
Entries
- Age 17 & over
- 27500 places
- Entries closed
- to 01/08/2025
- Charity places
- Enter online
- Event merch available
- Race pack by post
- Series discount