The Cardiff Half Marathon is expected to cause road closures in Cardiff on Sunday, October 1st, 2023. The following roads will be closed between 4am and 12 noon:

• North Road south of the junction with Boulevard de Nantes to the junction with the A4161
• The A4161 from the junction with North Road to its junction with Kingsway
• Kingsway from the junction with the A4161 to the junction with Duke Street
• Duke Street and Castle Street
• Cowbridge Road East from the junction with Castle Street to the junction with Cathedral Road

There will also be a rolling road closure from 8.30am until 3.10pm on Sunday, October 1st, to facilitate the route on the following roads:

• Cowbridge Road East from the junction with Cathedral Road to the junction with Neville Street
• Wellington Street, Leckwith Road and Sloper Road
• Penarth Road, Cardiff Bay Barrage, Harbour Drive and Roald Dahl Plas
• Britannia Quay, Pierhead Street, Bute Place, Lloyd George Avenue
• Herbert Street, Tyndall Street, East Tyndall Street and Windsor Road

Access to cycle lanes impacted around the route will be maintained, and open access routes (indicated in green) will be open at all times during the day. The road opening times are indicated on the road closure map, which can be downloaded from the Cardiff Half Marathon website. It is recommended to plan your route in advance and be aware of potentially congested areas. If you have any queries or concerns about any of the road closures detailed, you can email .