Backwards and forwards across the Danish German border

The 130 km long Deutsch-Dänische Grenzroute (German Danish Border Route) from  Højer (DK) to Flensburg (D) is based on two interlinked routes on both sides of the Danish German border: Danish Nationalroute 8 and Nord-Ostsee Radweg. During the trip east from the North Sea to the Baltic one crosses the border thirteen times. It is possible to cycle a circular route which is over 200 km long. It looks like an interesting route. It is on our list of possibilities in case we have a week to spare this summer. However I suspect would be easier to cycle from Flensburg to Højer and back again, if you wish to travel by public transport to your starting point. The city is on both the Danish and German main line railways. The website gives all the info you need to cycle the route.