Paolo,
Thank you so much for responding to my question. I am very familiar with the area area around Klosterneuburg and am glad to hear of bike paths along the Danube. It has been many years since I really lived in Vienna and I mostly remember the cobble stone roads. I will be living in the first district very near the opera so I will be needing to find ways to get out onto the trails. Is it possible to take a bike on the Strassenbahn? I once lived in Grinzing but mostly have lived in the third district. Thanks for the information about the Roadbiker.
Lawrence