Hamburg to Copenhagen train with Deutsche Bahn (EC,IC,RE)

Deutsche Bahn (DB) is Germany’s main train operator, running around 40,000 domestic and international services each day. Its fleet includes a variety of train types: high-speed ICE (Intercity Express) trains, reaching up to 300 km/h; IC (Intercity) and EC (EuroCity) trains for long-distance travel; and IRE (Interregio-Express), RE (Regional Express), and RB (Regionalbahn) services for regional and local connections. While bathrooms are standard on all trains, amenities such as onboard restaurants and free Wi-Fi are available only on certain train types and routes. DB offers a wide range of fares, including Super Saver, Saver, and Flexible tickets, along with discount cards like the BahnCard 25, 50, and 100. Additional options include single tickets, day tickets, and group tickets. Popular routes include Berlin–Munich, Hamburg–Frankfurt, Cologne–Stuttgart, Berlin–Dresden, and Hamburg–Cologne, as well as numerous regional services across Germany.

Sylt Shuttle Plus was a unique passenger train service operated by Deutsche Bahn (DB) that connected Niebüll and Westerland on the island of Sylt, Germany. Unlike the primary Sylt Shuttle, which transports vehicles, the \Plus\" service was designed for passengers without cars. It involved coupling a Class 628 diesel multiple unit to the rear of the car shuttle train. Introduced in 2015, the Sylt Shuttle Plus gained notoriety for its often-empty carriages and longer travel times compared to regional trains, leading to its nickname \"ghost train.\" The service was discontinued in December 2024."

erixx is a private train company in Germany offering rail services in Bremen and Lower Saxony in northern Germany. Founded in 2011, erixx runs six regional lines including the Heidebahn from Hanover to Buchholz as well as offering service to Wittingen, Bad Harzburg, Soltau and Wolfenbuttel. The trains are modern, comfortable and alcohol-free in order to provide a pleasant journey. The most popular journeys include Hanover to Bad Harzburg with the RE10, Bad Harzburg/Goslar to Braunschweig with the RB42/43, Braunschweig to Uelzen with the RB47, and Lueneburg to Dannenberg on the RB32.

Nordbahn Eisenbahngesellschaft (NBE) is a German private railway company based in Hamburg, established in 2002. It is a subsidiary of BeNEX and AKN Eisenbahn, focusing exclusively on passenger transport. Nordbahn operates numerous regional train lines across Hamburg and Schleswig-Holstein, including routes like Hamburg–Itzehoe, Neumünster–Büsum, Hamburg-Altona–Wrist, and Neumünster–Bad Oldesloe. The company utilizes Stadler FLIRT battery-powered railcars and previously operated Alstom Coradia Lint 41 vehicles. Nordbahn's services are integrated into the Hamburg (HVV) and Schleswig-Holstein (NAH.SH) tariff systems.