Here are a few suggestions for your next trip from Boulogne-Billancourt

In 2 hours, you can reach Paryż.

In 3 hours, you can reach Bruksela, Lyon.

In 4 hours, you can reach Londyn, Luksemburg, Rotterdam, Antwerpia, Esch-sur-Alzette.

In 5 hours, you can reach Amsterdam, Marsylia, Genewa, Haga.

In 6 hours, you can reach Zurych.

In 7 hours, you can reach Schaan, Birmingham, Vaduz, Monachium.

In 8 hours, you can reach Monako, Barcelona, Mediolan, Liverpool.

In 9 hours, you can reach Berlin, Hamburg.

In 10+ hours, you can reach Madryt, Rzym, Budapeszt, Warszawa, Wiedeń, Sztokholm, Praga, Dublin, Zagrzeb, Bratysława...