4 weeks on a roadtrip in the Midwest/Rockies two years ago. Could have happily stayed longer, except for this:
1. Totally fed up with driving at this point
2. I am a teacher and had to get back for start of school
It was an awesome trip. Here, one talks of travel as something that educates, "identity travel". Like historically, this is even a thing. Hans Christian Andersen took such trips, for example. For me, losing myself in the landscape, the meeting of peoples and cultures (well, a little bit at least), worked like that. But only after about two weeks - as in, for the first couple of weeks, I had a great time, saw and did awesome stuff, but the last 2 weeks matters more wrt impact on my own identity. Regardless, that trip is firmly part of my frame of reference now :-)
-DanishFlyer