Cardiff Half Marathon

One of Wales’s largest fundraising events is back this fall. The Principality Cardiff Half Marathon is returning Sunday (1st of October) with more than 25,000 participants.

The track will pass through some of Cardiff’s most iconic landmarks including Cardiff Castle, The Principality Stadium, Wales Millennium Centre, Cardiff Bay, and Cardiff Civic Centre.

Visit the Cardiff Half Marathon website for more information about the event.

The city is expected to be exceptionally busy, so residents and visitors are advised to plan and leave plenty of time for their journey. Please check before you travel. Road closures for the Cardiff Half Marathon on October 1st.

Disruptions to public transport services are expected. Please check the below arrangements by operators before traveling. We will continue updating this page with more information as we receive it from operators.

Planned Industrial Action will affect public transport services over the weekend. Due to the large-scale disruption on rail, it is possible that road and bus travel will be impacted. Please expect busy services, delays, and cancellations.

Visit our Industrial Action disruption for more information before traveling here.  


Adventure Travel

Diversions to Adventure Travel service 304 will be in place. 


Cardiff Bus

Diversions to Cardiff Bus services will be in place. We have updated our Journey Planner tool to reflect changes to services made by Cardiff Bus. Please use our Journey Planner tool to plan your journey for the day. All times are approximate and subject to closing and opening of roads on the day.

Unfortunately, we’re unable to update our Timetable page to reflect changes to services. Timetable information for each of the affected services is available below.

Service 4

Service 6

Service 11

Service 13

Service 17/18

Service 21/23

Service 24

Service 25

Service 27

Service 30

Service 35

Service 44/45

Service 49/50

Service 52

Service 57/58

Service 61

Service 63

Service 92/94

Service 95

Service 96


Newport Bus

Route 30 will end and start from The Infirmary stop on Newport Road.

From Newport - 09:20 (NB), 10:20 (CB) and 11:25 (NB)
From Cardiff - 0920 (CB), 1025 (NB), 1125 (CB), 1225 (NB)

All services to resume their normal route there onwards.


Stagecoach South Wales

The following Stagecoach South Wales services will be diverted.

26, 86X, 132 and T4 will divert via Colum Road, Park Place and Boulevard De Nantes from first bus until 10:45. After 10:45 these services will be able to run via North Road.

The 122, 08:10 and 10:10 services from Tonypandy and the 09:47 and 11:47 services from Cardiff will not be able to serve Cathedral Road and will run via Western Avenue to Greyfriars Road.