Here are a few suggestions for your next trip from Mainz

In 4 hours, you can reach Paris, Bruxelles, Luxemburg, Esch-sur-Alzette.

In 5 hours, you can reach Berlin, Amsterdam, Zürich, Hamburg, Rotterdam, Anvers.

In 6 hours, you can reach Schaan, Vaduz.

In 7 hours, you can reach Londra, Geneva.

In 8 hours, you can reach Viena, Praga, Milan, Marsilia.

In 9 hours, you can reach Bratislava, Birmingham, Brno.

In 10+ hours, you can reach Madrid, Roma, București, Budapesta, Varșovia, Stockholm, Copenhaga, Dublin, Zagreb, Ljubljana...