CAI (Club Alpino Italiano)
CAI is a national organisation that maps and maintains public footpaths for walkers. It is an excellent resource for walkers with a local club in Asiago itself and for the surrounding Province of Vicenza. Click here for the CAI webpage with details of footpaths on the Altopiano of Asiago with Google translation into English.
Here is a webpage managed by the local tourism office with some routes. Many books are also available in Italian.