Denmark : DSB - Arriva
The railway network of Denmark which includes the private rail company, Arriva trains, is operated by the DSB/Danske Statsbaner (Danish State Railways).
Copenhagen and Zealand are connected to other main towns by modern Intercity trains every hour. Travellers can reach Odense in just over an hour using the half hourly trains. Travel duration from Aarhus to Copenhagen takes just 3 hours with the InterCityLyn trains.
Eurail Passes can be used on Arriva trains, DSB-First and S-Tog or S-trains, Copenhagen’s city center (and inner suburbs) rail network operated by Danske Statsbaner. Horlders of a Eurail Pass valid in Denmark can benefit from many discounts on ferry services and museums.
There is a direct link to central Copenhagen and Malmö from Copenhagen airport’s station.
Denmark is one of the countries at the heart of Scandinavian travel. There is a train connection between Copenhagen and Malmo which is found in Sweden. High speed trains (the X2000) connects Copenhagen to Stockholm in just over 5 hours. Major cities in Germany can be reached by night trains.
No reservation is needed on most Danske Statsbaner or Arriva trains. However a reservation is recommended on InterCity/InterCity Lyn trains. As for X2000 trains, ICE International trains and night trains like the CityNightLine, a reservation is necessary.