The average bus between Castlemilk and Dumbarton takes 1h 57m and the fastest bus takes 1h 33m. The bus runs at least 3 times per hour from Castlemilk to Dumbarton. 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 every 20 minutes between Castlemilk and Dumbarton. The earliest departure is at 4:46 AM at night, and the last departure from Castlemilk is at 4:58 PM which arrives into Dumbarton at 6:58 PM. All services require a transfer, and take on average 1h 57m. The schedules shown below are for the next available departures.

2h 24m • 1 change

1h 59m • 1 change

1h 49m • 1 change

1h 53m • 1 change
Want to know about travelling from Castlemilk to Dumbarton? 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 Castlemilk to Dumbarton. However, there are services departing from Castlemilk station and arriving at Dumbarton station via Osborne Street. The journey, including transfers, takes approximately 1h 57m.
Castlemilk to Dumbarton bus services, operated by First Greater Glasgow, depart from Glenwood Business Centre station.
Castlemilk to Dumbarton bus services, operated by First Greater Glasgow, arrive at Riverside Lane station.
The distance between Castlemilk and Dumbarton is 26.3 km. The road distance is 41 km.
You can take a bus from Glenwood Business Centre to Riverside Lane via Osborne Street in around 1h 53m.