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Road Closures Ahead of Cardiff Half Marathon on October 4
The Cardiff Half Marathon is set to take place on Sunday, October 4, 2026, beginning outside Cardiff Castle. The race will feature a 13.3-mile route that runs past several prominent landmarks, including the Principality Stadium, Cardiff City Stadium, Penarth Marina, and Cardiff Bay, before concluding at the Civic Centre.
In preparation for the event, several road closures have already been implemented, with more closures scheduled to take effect on the day of the race. The race is expected to draw in large numbers of participants, significantly impacting traffic in the city.
Starting at 10:00 am, the general race will commence, preceded by an elite wheelchair race at 9:57 am. To facilitate a safe start for all runners, the start times have been staggered based on the colour of their race bibs.
The following road closures have been established in conjunction with the marathon:
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Civic Centre Road Closures:
- College Road: Closed from 5 am on September 30 to 11:59 pm on October 5, from its junction with Museum Avenue to King Edward VII Avenue. Access for vehicles will be maintained until 9 am on October 4.
- King Edward VII Avenue: Closed from 5 am on October 1 to 11:59 pm on October 5, from its closed end with Boulevard de Nantes to City Hall Road.
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Additional Road Closures:
From 5 am on October 2 until 11:59 pm on October 4, the following roads will be closed:- King Edward VII Avenue (various segments)
- Museum Avenue
- Gorsedd Gardens Road
- City Hall Road
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Race Day Closures:
On October 4, roads will close as follows:- Between 4 am and noon: Major routes including North Road, the A4161, Kingsway, Duke Street, Castle Street, and Cowbridge Road East will be shut.
- Between 6 am and 10:45 am: North Road from Colum Road to Boulevard de Nantes.
- Between 10 am and 3:10 pm: Colum Road and sections of Park Place.
Rolling Road Closures will also be in place from 8:30 am to 3:10 pm along the race route. Significant roads affected include Cowbridge Road East, Wellington Street, and various roads leading to Cardiff Bay.
Access for emergency services and certain vehicle movements will be carefully managed throughout the event. Residents and businesses in Cardiff Bay will receive updated information regarding diversion routes.
This major event necessitates careful planning to ensure public safety and minimal disruption. Full details and maps of the road closures can be accessed through Cardiff Council’s resources.
