121
days
17
weeks
2904
hours
121
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.