ID, AK, HI

I knocked 5 states off the list 2 years ago with a trip (NE, SD, ND, MT, WY). I flew to Denver then drove to Rapid City SD. I spent time in the awesome Scotts Bluff National Monument and ticked Nebraska off my list.

I then went up to Rapid City for a few days (ticking SD off the list) where I met my travel friends. We went to Badlands NP, Custer SP, Wind Cave NP, and Mt Rushmore. Definitely some great sights.

We took an endless road trip one day up to Theodore Roosevelt NP in North Dakota (knocking ND off the list). It was a 5 hour drive north just to see some buffalo, but had a great lunch.

We then drove west for a few miles into Montana (knocking MT off the list) and then down into Wyoming to visit Devil's Tower (knocking WY off the list). It was the longest day of the year and we got to Devil's Tower while the sun was low and it was beautiful with the sun at that angle.

While that was an exhausting day, we knocked off 4 states and a NP off the list.

(We are also trying to hit all the National Parks in the contiguous US)