Here are a few suggestions for your next trip from Colonia

In 2 hours, you can reach Bruselas.

In 3 hours, you can reach Ámsterdam, Amberes.

In 4 hours, you can reach París, Luxemburgo, Hamburgo, Róterdam.

In 5 hours, you can reach Londres, Berlín, Zúrich, Esch-sur-Alzette.

In 7 hours, you can reach Schaan, Vaduz.

In 8 hours, you can reach Viena, Praga, Birmingham, Marsella, Ginebra.

In 9 hours, you can reach Copenhague, Bratislava, Milán, Århus.

In 10+ hours, you can reach Madrid, Roma, Bucarest, Budapest, Varsovia, Estocolmo, Dublín, Zagreb, Liubliana, Mónaco...