A good bike and a good cycling guide are the first two steps towards a successful cycling holiday. The Danish Cycling Federation has a large selection of guides and maps available to buy online.
You can buy a cycling map of Langeland's cycling routes at the Langeland Visitor Centre and at Boghandleren Rudkøbing (also happy to send to your DK address).
Read more about the Langeland cycle routes here
You can plan your bike route online with the Naviki app and website, available in multiple language versions.