How long are you in the tunnel for on Eurostar?

The Channel Tunnel is under the English Channel for 37.9 km or 23.5 miles, which is the worlds longest undersea tunnel. When riding the Eurostar you'll be underwater for about 13 minutes.



The time spent in the Channel Tunnel on the Eurostar varies depending on your specific route, but here’s a general breakdown:

  • London ↔ Paris / Brussels: The train is in the tunnel for approximately 20 minutes.
  • London ↔ Amsterdam / Rotterdam: Also around 20 minutes in the tunnel.
  • London ↔ Other European destinations (via Lille): The tunnel crossing time remains the same (~20 minutes), but the overall journey is longer.

Key Details:

  • Total Crossing: The tunnel itself is 50.5 km (31.4 miles) long, and the high-speed train travels through it at its operational tunnel speed.
  • Feeling the Tunnel: You’ll know you’re entering because the outside light suddenly disappears, and your ears may pop due to pressure changes. There’s no dramatic “underwater” feeling—it’s a smooth, dark ride.
  • Timing: The 20 minutes is just the undersea section. The approach to the tunnel portals (from both the UK and French sides) involves several minutes of additional tunnel time through the land sections on either coast.

Pro Tip:

If you want to experience the moment of crossing under the English Channel, note that it’s roughly midway through the journey between London and Paris/Brussels. For example, about 1 hour after departure from London St Pancras, you’ll enter the tunnel and emerge in France around 20 minutes later.

So, in short: Plan for about 20 minutes of your journey to be inside the Channel Tunnel itself.

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As you may know, this train travels underwater for a short time. The underwater train from London to Paris goes through the Channel Tunnel, which runs under the English Channel for approximately 13 minutes.

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What does the Eurotunnel look like underwater? This may be a disappointing answer, but you can't actually see the sea from the Eurostar. When you go through the tunnel and look out of the window, all you can see is your reflection in the glass because it's quite dark outside.

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Yes, you can bring food with you for personal consumption between Folkestone & Calais, and for your onward journey.

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