Rides around the Finger Lakes are all nice -- Skaneateles, Otisco, Cayuga, Seneca all have nice shoulders and are beautiful rides, some longer than others. +1 on Rt 31 over Rt 20/5 which is real busy. Also you should check out the routes at ridewithgps.com and bikely.com and mapmyride.com, lots of good routes out there that avoid busy roads.

One organized ride I strongly recommend is the Point to Pint ride in August out of Empire Brewing in Armory Square downtown Syracuse, sponsored by the Brewery and Syracuse Bicycles, I did the century ride last year, out to Hamilton NY and back in, beautiful roads, and all the beer you can drink at the end!