VVV Dordrecht has put together this bicycle route based on bicycle junctions. You will first cycle through the historic center of Dordrecht and then continue across the island to the ferry Kop van 't Land. The ferry takes you by bike to the Brabant part of NP De Biesbosch. On the way, you pass the Biesbosch Museum Island and then the same ferry back to the island of Dordrecht. During WW II there was a lot of fighting in this area and you will encounter several casemates and bunkers. Because the bicycle route uses nodes, you can start the route at any point. Below is an example of how you could cycle the route.
Order the route description in the VVV web shop.