You won't find many routes with bolts in the Dolomites with crusty pegs being favoured. There are the occasional harder routes which have bolts but they tend to be sporting rather than sporty.
As for big easy routes, the Fedele / Dibona route on the Sass Pordoi is a pretty awesome day out (about 800m, 20 pitches from memory). Its crux is maybe 16ish. Lots of scrambly stuff with a few technical pitches in between. You could simul climb a fair bit of it. Lots of fixed gear (often leading in the wrong direction), but you'd need trad gear as well.
You can walk off at the big scree ledge about 2/3 of the way up after about 12 pitches.