A nice blend of some city riding through the "teen" districts of Vienna (18, 17, 16, .. 14), along the Vienna river and up into the Wienerwald.  Leaves are just coming in and the flowers are out.  A tough climb up to Sophienalpe, 300 meters, but worth the long-ranging views over the Danube and across the Vienna plain.

A tough but quite variable ride, taking you through interesting parts of Vienna and then out into the Wienerwald and up one of the highest hills right near the city.  Good climbing practice!