The average bus between Cardiff Bay (Water) and Castell Coch takes 1h 11m and the fastest bus takes 38 min. There is a bus service every few hours from Cardiff Bay (Water) to Castell Coch. The journey time may be longer on weekends and holidays; use the search form on this page to search for a specific travel date.
Buses run hourly between Cardiff Bay (Water) and Castell Coch. The earliest departure is at 12:32 AM at night, and the last departure from Cardiff Bay (Water) is at 9:51 PM which arrives into Castell Coch at 11:06 PM. All services require a transfer at Cardiff Bus Interchange Bay 1 and take an average of 1h 11m. The schedules shown below are for the next available departures.

1h 9m • 1 change
1h 12m • 1 change
1h 14m • 1 change
1h 15m • 1 change
6h 2m • 1 change
51 min • 1 change
47 min • 1 change
52 min • 1 change
6h 2m • 1 change
51 min • 1 change
47 min • 1 change
52 min • 1 change
6h 2m • 1 change
48 min • 1 change
47 min • 1 change
52 min • 1 changeWant to know about travelling from Cardiff Bay (Water) to Castell Coch? We have put together a list of the most frequently asked questions from our users such as: What is the cheapest mode of transport? What is the quickest option? How much do tickets usually cost? and many more.
No, there is no direct bus from Cardiff Bay (Water) to Castell Coch. However, there are services departing from Cardiff Bay (Water) station and arriving at Castell Coch station via Cardiff Bus Interchange Bay 1. The journey, including transfers, takes approximately 1h 11m.
Cardiff Bay (Water) to Castell Coch bus services, operated by First South & West Wales, depart from Mount Stuart Square station.
Cardiff Bay (Water) to Castell Coch bus services, operated by First South & West Wales, arrive at Ynys Bridge station.
The distance between Cardiff Bay (Water) and Castell Coch is 10.8 km. The road distance is 13 km.
You can take a bus from Mount Stuart Square to Castell Coch via Cardiff Bus Interchange Bay 1, Greyfriars Road GF, and Ynys Bridge in around 1h 2m.