Here are a few suggestions for your next trip from Arras(F)

In 2 hours, you can reach Paris, Lille, Brussels, London, Anderlecht, Schaerbeek, Leuven, Molenbeek-Saint-Jean, Ixelles, Reims...

In 3 hours, you can reach Rotterdam, Antwerpen, Gent, Lyon, Charleroi, Liège, Strasbourg, Brugge, Breda, Namur...

In 4 hours, you can reach Luxembourg, Amsterdam, Esch-sur-Alzette, The Hague, Dudelange, Utrecht, Köln.