Oysho Cardiff Half

Oysho Cardiff Half is a major half marathon in Cardiff with a fast, flat, traffic-free road route from Cardiff Castle to the marina and across the Cardiff Bay barrage.

Oysho Cardiff Half takes place on Sunday 4 October 2026 in Cardiff, starting at Cardiff Castle. The event is an iconic road race around the Welsh capital, featuring a flat, fast, traffic-free course that runs from the castle to the marina and across the Cardiff Bay barrage. It is recognised by World Athletics as one of the best half marathons in the world. Event date and time: - Sunday 4 October 2026 - Start time: 10:00 Key details: - Distance: 13.1 miles (half marathon) road running, approximately 81 m ascent - Age requirement: 17+ - Entry fees shown: £5-£60 - Places shown: 27,500 (entries shown as closed), with charity places available The event features an event village, entertainment and music, chip timing, water stations, toilets, distance markers, first aid and marshals. Sustainability measures listed include carbon offset, recycling and public transport links. Charity entry information is available via the charity places page. BOOK NOW