Well, last one we did varied between 60 and 90kms per day. We were travelling fully loaded, front & rear panniers, in rather hilly Tuscany. Daily time in the saddle varied from 3.5 to 6hrs.
We're doing another tour this December in Thailand, but this time its an organised trip with a following vehicle carrying our luggage. Daily mileage of 80-140kms. I'm fit from racing at the moment (10-15hrs training per week), but my wife is hoping to survive with just 2-3 spinning classes per week and a weekend ride of 2-3hrs. Of course she's got me to push her up the hills when required