The metro is by far the most convenient way to get around Paris. At no point within city limits can you ever be more than 400m away from a station. There are 384 stops along sixteen different lines. Additionally, there are five express lines called the RER (French abbreviation for Regional Express Network). These trains run at regular intervals of 6 minutes and are considerably faster than the regular Metro. To travel to any location outside the 20 arrondissements, you will need a separate ticket. A single Metro ticket will cost €1.50, but packs of ten can be bought for €11.30. One ticket is good for a single bus, RER, or Metro journey and allows for changeovers between the RER and the Metro.
Régie Autonome des Transports Parisiens (RATP)
Telephone: 0892 684 114/7714