My 2009 Novara Randonnee, the TransAm veteran, has some 24,000 miles on it. Obviously 20,000 miles came after the TransAm, in commuting, weekend rides, shorter tours, etc. It's still going strong, only really needs some older, out of production replacement hoods.
I generally prefer riding the Fuji Touring. I got a new frame 12 years ago, and that frame has close to 50,000 miles on it. The fork didn't crack and so wasn't replaced like the frame, so the fork from 1998 has some 12,000 miles more. Frame and fork are still doing fine, although I need to figure out how to paint some rust spots and have them stay painted, dang it!