I drove across the country with my brother last week. We started in Long Island, NY and ended in Santa Monica, CA. The route we followed was:

Mineola, NY > Charlotte, NC
Charlotte, NC > New Orleans, LA
New Orleans, LA > Austin, TX
Austin, TX > Tucson, AZ
Tucson, AX > Santa Monica, CA

This trip added 5 states I’ve never been to before. Now I’m up to 29 states in total

create your own visited states map
or check out these Google Hacks.