Journey across the contiguous 48! Find a path that touches each state only once. BUT, make your journey as alphabetically late as possible.
Each state can be visited ONLY ONCE. Border crossings must be via land or road.
There are many one-touch paths through the states. At each junction, choose the ALPHABETICALLY LATEST adjacent state that will still allow a one-touch path to be completed. Note this is not simply the A to Z path backwards.
e.g. from Idaho, the alphabetically latest adjoining state is Wyoming, but this might render a one-touch path impossible by making Washington a dead end.
Inspired by the "walking across borders" quizzes by scambigol