Yes, you can leave Paris Charles de Gaulle (CDG) during a long layover, provided you meet the entry requirements for the Schengen Area. In 2026, most travelers from "visa-exempt" countries (like the US or UK) must have an approved ETIAS authorization linked to their passport. Travel experts recommend a minimum layover of 8 hours to make a trip into central Paris worthwhile. It takes approximately 45–60 minutes to reach the city via the RER B train or a taxi, and you must account for at least 90 minutes to clear immigration and security upon your return. A 6-hour layover is technically possible but extremely risky, often leaving you with less than an hour at a landmark like Notre Dame. If your layover is shorter than 8 hours, 2026 travelers often prefer visiting Roissy Village or taking the TGV directly from Terminal 2 to Disneyland Paris, which is only a 10-minute train ride away, offering a much more manageable excursion than the trek into the city center.