The average train between Cologne and Diest takes 3h 26m and the fastest train takes 2h 51m. The train service runs several times per day from Cologne to Diest. 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 4 times a day between Cologne and Diest. The earliest departure is at 7:43 AM in the morning, and the last departure from Cologne is at 9:42 PM which arrives into Diest at 6:34 AM. All services require a transfer, and take on average 3h 26m. The schedules shown below are for the next available departures.

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2h 51m • 1 change

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2h 51m • 1 change

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Want to know about travelling from Cologne to Diest? 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 Cologne to Diest. However, there are services departing from Cologne station and arriving at Diest station via Brussels-Nord. The journey, including transfers, takes approximately 3h 26m.
Cologne to Diest train services, operated by Deutsche Bahn Intercity (DB IC), depart from Köln Hbf station.
Cologne to Diest train services, operated by Deutsche Bahn Intercity (DB IC), arrive at Diest station.
Book your Cologne to Diest train tickets online with Deutsche Bahn Intercity (DB IC) and Belgian Railways (NMBS/SNCB).
The distance between Cologne and Diest is 133.2 km. The road distance is 273 km.
You can take a train from Köln Hbf to Diest via Brussels-Nord in around 3h 14m.