The "Chunnel" (Channel Tunnel) itself is a railway tunnel, so whether you have access to a toilet depends on how you are crossing. If you are traveling on the Eurostar passenger train, there are several modern, high-standard toilets available in every carriage for the duration of the 35-minute tunnel transit. However, if you are using Le Shuttle (the vehicle transport service where you drive your car onto a train), there are no toilets inside the individual carriages where the cars are parked. Passengers are required to remain in or by their vehicles for the duration of the 35-minute crossing. For Le Shuttle travelers, it is vital to use the extensive restroom facilities at the passenger terminal buildings in Folkestone or Calais before boarding the train. In 2026, the boarding process is strictly timed, and once the train is in motion, you cannot access a restroom until you drive off at the other end, making the pre-boarding "pit stop" a mandatory part of the journey for most families.