Obermarchtal - Blaubeuren - Ulm, approx. 65.Through the valley of the "old Danube", the original course of the Danube, to Blaubeuren with the famous, "Blautopf" (blue pothole). This is a karst spring and the beginning of a great underground cave system.
Ulm - Lauingen/Dillingen, approx. 50/55. Visit the worlds highest steeple in Ulm before you cycle through small well-preserved towns towards Dillingen.
Total Distance: 305 (approx.)
Notes:The first two sections are slightly hilly and then the route takes a more level profile.