UK citizens and legal residents use Interrail Passes for train travel across Europe. The distinction between the two is based on residency rather than EU membership: Interrail is for residents of European countries (including the UK, Turkey, and Switzerland), while Eurail is for travelers from outside Europe (such as the US, Canada, or Australia). Despite Brexit, the UK remains a full member of the Interrail community, allowing British travelers to explore 33 countries with a single pass. A key rule for UK Interrail users is the "Inbound/Outbound" restriction: the pass generally only allows for two journeys within your home country (one to leave and one to return), primarily to facilitate getting to the Eurostar or an airport. For the rest of the trip, the pass offers unlimited travel on participating national rail networks across the continent, making it a staple for British "backpackers" and "slow travelers" alike.