The average train between Koper and Mainz takes 18h 56m and the fastest train takes 14h 58m. There is at least one train per day from Koper to Mainz. 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 once daily between Koper and Mainz. The earliest departure is at 5:23 AM in the morning, and the last departure from Koper is at 7:58 PM which arrives into Mainz at 4:44 PM. All services require a transfer at Ljubljana and take an average of 18h 56m. The schedules shown below are for the next available departures.
Arrives next day





24h 29m • 5 changes
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19h 16m • 5 changes
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20h 46m • 5 changes





14h 58m • 5 changes
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19h 16m • 5 changes
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20h 46m • 5 changes
Want to know about travelling from Koper to Mainz? 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 Koper to Mainz. However, there are services departing from Koper station and arriving at Mainz station via Ljubljana. The journey, including transfers, takes approximately 18h 56m.
Koper to Mainz train services, operated by Slovenske železnice (SŽ), depart from Koper station.
Koper to Mainz train services, operated by Slovenske železnice (SŽ), arrive at Frankfurt station.
Book your Koper to Mainz train tickets online with Slovenske železnice (SŽ), ÖBB Intercity and 7 other operators.
The distance between Koper and Mainz is 639.5 km. The road distance is 1,013 km.
You can take a train from Koper to Mainz, Römisches Theater via Ljubljana, Villach Hbf, Salzburg Hbf, Salzburg Hauptbahnhof, München Hbf, and Frankfurt in around 14h 9m.