Eligibility criteria:

  1. Layovers don't count.
  2. Boots-on-ground guarantees eligibility.
  3. Road trips can count even if I didn't get out of the car, so long as I sufficiently experienced the state.
  4. Same as above but for passing through on a train.

States I've been to

(and year of most recent visit)

States I haven't been to yet