S-train

Copenhagen's primary transport system

Word to the wise: Remember to stamp your ticket at the yellow boxes at stations, otherwise you might be hit with a fine by inspectors.
It is Copenhagen's fleet of red S-trains, rather than the Metro, that forms the backbone of the city's transport system. The trains link central Copenhagen with its inner suburbs and carry around 250,000 passengers a day. There are 85 stations in the city and beyond; you'll spot them by the red 'S' signs outside.

Although owned by different companies, tickets for the Metro and S-trains (and the city's bus network) are interchangeable. Like the Metro, the S-trains put other European transport systems to shame - not only clean and efficient, but also with free Wi-Fi.
A journey out of the city centre will probably start from one of its two hubs, Central Station or Nørreport Station. Although you'll rarely wait more than 10 minutes for a train during the day, be aware that frequency can drop to every hour during weekend nights.

Ticket pricing is determined by zone - the city centre lies within zones one and two. If you're planning to explore further afield, look into a City Pass which allows unlimited travel on S-train, Metro, and the bus network over a certain time period.