I had been to all 50 states before starting my Tesla road trip addiction, but I was missing 4 capitols. I knocked those out on a trip in 2019 finishing in Pierre, SD. I knocked out most of the MLB stadiums in 2018 and finished the rest off in 2019. The new one in Texas is the only one I haven't been to now. I was actually headed there for the World Series in October when my car broke down
Was able to get back on the road fairly quickly but I was cutting it close and there was some
very bad weather for late October in West Texas (heavy snow all the way down to I-10), so I decided to cut my losses and turned around and headed home. It wasn't part of the original plan, but there's a chance I'll catch a Blue Jays game there "on my way" home on this trip.
I started doing the state high points in August and it's been fun. I should get #25 and #26 on Tuesday, but I'm out of shape and not a mountain climber by any means, so I'm starting to run out of "easy" ones. I think I can get 30 without pushing myself too hard and maybe 35 with some real effort (such as setting aside entire days for long hikes). 40 is pushing it for me, but maybe if I take the time to acclimate to higher elevation and time it just right in terms of weather (both seasonally and short-term forecast). The 10 toughest ones are most likely beyond my skill level and physical shape, but who knows, maybe some day I'll get in GREAT shape and learn how to use a pick axe and crampons. Maybe this will motivate me
The other one in the back of my mind is national parks. I haven't made any specific effort to start checking them off the list yet, but I've been to over half of them, and I might start making a real effort to seek the ones I haven't been to yet.