Here are a few suggestions for your next trip from Haarlem

In 2 hours, you can reach Amsterdam, Rotterdam, The Hague, Utrecht, Almere Stad, Haarlem, Zaanstad, Antwerpen, Eindhoven, Tilburg...

In 3 hours, you can reach Brussels, Groningen, Anderlecht, Düsseldorf, Schaerbeek, Leuven, Essen, Enschede, Molenbeek-Saint-Jean, Ixelles...

In 4 hours, you can reach Paris, Gent, Köln, Charleroi, Liège, Brugge.