The maps of the Ronde van Nederland is terrific. Even though it is in Dutch, which we don’t understand, the maps themselves were invaluable. We were very pleased that we had ordered them for our tour. One thing we noticed on “day 1” was that the occasional number on the map was missing. To solve this problem, we made use of an app “Fietsknoop dé handle fietsapp”. We then compared the numbers on our map to the numbers on the app and filled in the missing ones.