[EmilyHATFIELD]

Lille (Northern France) to Marseille (Southern France) - 1000Km

10 hours via car at highway speed - 5 hours with train

For long distances you'll be using the TGV (300km/h) if you need to go to smaller cities the trains will go roughly at highway speed

[Mountain_Skies]

What percentage of cities in Europe have TGV lines?

[alistairSH]

TGV is France’s intercity high-speed rail system, so not many.

But, just about every major and secondary city in the EU has high speed rail service. As you move into central and Eastern Europe, the speeds drop quite a bit, but are still faster than anything Amtrak offers (except the short section of Acela line that can actually go fast).

https://upload.wikimedia.org/wikipedia/commons/thumb/b/bf/Hi...