The average train between Cologne and Diez takes 2h 41m and the fastest train takes 2h 8m. There is a train service every few hours from Cologne to Diez. 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 Cologne and Diez. The earliest departure is at 12:04 AM at night, and the last departure from Cologne is at 7:38 PM which arrives into Diez at 10:07 PM. All services require a transfer at Limburg and take an average of 2h 41m. The schedules shown below are for the next available departures.

5h 36m • 1 change

3h 5m • 1 change

2h 8m • 1 change

2h 47m • 1 change

5h 36m • 1 change

3h 5m • 1 change

2h 8m • 1 change

2h 47m • 1 change

5h 36m • 1 change

3h 5m • 1 change

2h 8m • 1 change

2h 47m • 1 change
Want to know about travelling from Cologne to Diez? 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 Diez. However, there are services departing from Cologne station and arriving at Diez station via Limburg. The journey, including transfers, takes approximately 2h 41m.
Cologne to Diez train services, operated by National Express, depart from Köln Hbf station.
Cologne to Diez train services, operated by National Express, arrive at Limburg station.
Book your Cologne to Diez train tickets online with National Express, Deutsche Bahn Regio (DB Regional) and Trans Regio Deutsche Regionalbahn GmbH (MittelrheinBahn).
The distance between Cologne and Diez is 98 km. The road distance is 116 km.
Deutsche Bahn Intercity (DB IC) operates a train from Köln Hbf to Limburg every 2 hours. Tickets cost €20–75 and the journey takes 55 min.