Be sure to have plenty of gas in the tank, because Belfast is well worth a detour. Located 30 miles from Castledawson, it boasts some wonderful attractions, such as Titanic Belfast and Belfast Castle. Nothing screams fun like a road trip, so keep on driving to Londonderry. It’s 35 miles away and also offers a few excellent sights, such as Derry City Walls and Museum of Free Derry and Bloody Sunday Memorial.