Austria is beautifully surrounded by mountains. To the north, Germany and part of the Czech Republic are the border. On the south side you find Italy as a natural transition and Switzerland sometimes looks eastwards with envy
Wonderful regions for cycling in Austria are in the north the region of Upper and Lower Austria, where the capital Vienna can also be found.
The focus here is more on beautiful, rural tours, though.
Further south, in the southeast you find Styria (around Graz) and Carinthia. Two very large Bundesländer and beautiful areas for cycling, especially for road cyclists.
Salzburgerland, the well-known area in the mid-north, is also gorgeous and again borders the regions of Carinthia and Tyrol.
To the west, you will find Tyrol and Vorarlberg, with the former taking the lion's share of cycling fun.