The Moroccan rail system runs along two branches: from Casablanca to Oujda, and from Tangier to Marrakech. Second-class travel is quite comfortable for most journeys. In summer, note that first class ensures an air-conditioned carriage only on intercity TCR (Train Climatisé Rapide) trains. The most frequent direct services to/from Marrakech are to/from Fez and Rabat, and the direct overnight service to/from Tangier with sleeping carriages. Return tickets are good for up to seven days after your initial date of travel.