Trentino is known throughout Italy for its bike paths, used even by world champion Francesco Moser for his training.
Here in the Valsugana there are  beautiful flat tours as well  as countless mountain routes such as  the Manghen-Pass, the Panarotta or the Kaiserjäger route to name a few.
Info: https://www.visitvalsugana.it/en/discover-valsugana/sport/bike/road-bike/