25
days
3
weeks
600
hours
25
sleeps
About Cardiff Half Marathon
The Cardiff Half Marathon is one of the UK's largest and most popular half marathon events, taking runners on a fast and scenic course through the Welsh capital 🏃 From Cardiff Castle to the Principality Stadium, the route showcases the best of this vibrant city while attracting thousands of runners of all abilities. Whether you're chasing a personal best or running for charity, the Cardiff Half Marathon delivers an incredible race day atmosphere 🏅 Count down the days until the Cardiff Half Marathon with our live countdown timer.