Komoot is a route planner. Kinda like google maps for cyclist and hikers. The difference is that it knows about the different paths that cyclist would want to use rather than just roads. It keeps track of different path surfaces from paved cycle paths to singletrack. Things the cyclist needs to plan a PavePlus route. You select your starting point and ending point and Komoot will choose the best route for Road cycling, Mountain biking, Bike Touring or Gravel riding. You can use the Opencycle base map with dedicated bike trail marked as a reference. I have found that Komoot does not always make the best choices of route for me but it is a much better tool to plan than anything else I have found.