Oysho Cardiff Half

Oysho Cardiff Half is a major half marathon in Cardiff with a flat, traffic-free city route from the castle to the bay, featuring chip timing, an event village and sustainability measures.

Oysho Cardiff Half is an iconic road race in Wales’ capital, widely recognised as one of the best half marathons in the world. The route offers a predominantly flat course taking runners from the castle area towards the marina and across the Cardiff Bay barrage.

• Date: Sunday 4 October 2026
• Start time: 10:00
• Location: Cardiff Castle, Cardiff
• Distance: 13.1 miles road running (+ 81m ascent)
• Features: Chip timing, traffic-free sections, entertainment/music, event village, fancy dress welcome
• Included (highlights): Eco goody bag, eco medal, technical t-shirt, event app, training plan, vouchers, cash prizes
• Sustainability: Carbon offset, recycling and a sustainability policy

How to enter:
Age 17+. Capacity listed as 27,500 places. Charity places are available via the event charity listings page.