The primary benefit of an Interrail Pass (for EU residents) or a Eurail Pass (for non-EU residents) in 2026 is its unparalleled flexibility and value for multi-city travel. A single pass provides access to the national rail networks of 33 European countries, allowing you to hop on most regional and local trains without buying separate tickets. In 2026, the "mobile pass" via the Eurail/Interrail app has made spontaneous travel even easier; you can decide to move from Paris to Amsterdam on a whim just by adding a journey to your digital diary. Additionally, passes offer significant discounts on ferries, hotels, and attractions (like 25% off Disneyland Paris). For a 2026 "Grand Tour," the pass is almost always cheaper than buying individual "point-to-point" tickets, especially if you prefer to travel at your own pace rather than following a rigid, pre-booked schedule.