Here are a few suggestions for your next trip from Ailly-sur-Somme(St-Ro)

In 2 hours, you can reach Paris, Lille, Rouen.

In 3 hours, you can reach Brussels, Anderlecht, Schaerbeek, Molenbeek-Saint-Jean, Mons, Reims, Ixelles, Uccle.

In 4 hours, you can reach London, Antwerpen, Rotterdam, Dudelange, Gent, Charleroi, Schifflange, Liège, Bettembourg, Brugge...

In 5 hours, you can reach Amsterdam, Luxembourg, Esch-sur-Alzette, The Hague, Lyon, Köln, Utrecht.