The average train between Harrow and Cardiff takes 2h 37m and the fastest train takes 2h 23m. There is an hourly train service from Harrow to Cardiff. The journey time may be longer on weekends and holidays; use the search form on this page to search for a specific travel date.
Trains run hourly between Harrow and Cardiff. The earliest departure is at 6:11 AM in the morning, and the last departure from Harrow is at 11:56 PM which arrives into Cardiff at 8:06 AM. All services require a transfer at Paddington station and take an average of 2h 37m. The schedules shown below are for the next available departures.
Arrives next day

2h 58m • 1 changeArrives next day

8h 10m • 1 change
2h 29m • 1 change
2h 39m • 1 change
2h 25m • 1 change
2h 28m • 1 change
2h 29m • 1 change
2h 39m • 1 change
2h 25m • 1 change
2h 28m • 1 changeWant to know about travelling from Harrow to Cardiff? 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 train from Harrow to Cardiff. However, there are services departing from Harrow station and arriving at Cardiff station via Cardiff Central. The journey, including transfers, takes approximately 2h 37m.
Harrow to Cardiff train services, operated by London Underground (Tube), depart from London Paddington station.
Harrow to Cardiff train services, operated by London Underground (Tube), arrive at Cardiff Central station.
Book your Harrow to Cardiff train tickets online with London Underground (Tube) and Great Western Railway (GWR).
The distance between Harrow and Cardiff is 196.9 km. The road distance is 246 km.
Great Western Railway (GWR) operates a train from London Paddington to Cardiff Central hourly. Tickets cost £60–120 and the journey takes 1h 58m.