For new, or TOFTT, or a place where a YMMV challange was struck, I might drive even an hour or more. Love the hunt!
For my regular ops area, is say 30 minutes. Is no so much the drive there, it's that after I'm in max relax mode I don't want to be driving long time. Plus I usually go at or near or after closing, and my regular bedtime is 2100, so, yea short drive!