I used to drive an hour and a half to the SEI factory back in the day. They have since closed it to the public but it used to be worth the trip occasionally .
I used to drive about an hour when I lived in Maine but nowadays the furthest I usually go is about 30 mins. But if we have to go to Tampa I'll drive a bit further to a huge LSS in St. Petersburg so that makes it about a 2 hour drive.
A friend and I once did a road trip from WI to VT and planned the drive based on scrapbook stores along the way. It was so much fun and we met a lot of fellow scrappers. Today, I drive an hour but have driven up to 3 to get to a store.