Before or during the trip, I star (save) the places I want to see in Google Maps using my desktop or laptop. This works well as a reminder, since I'm in Google Maps a lot on my phone while traveling, the stared places show up when I'm nearby.
I've never had such a long list of "things to see" that I really needed to organize them, that sounds exhausting.
2013 KZ Sportsmen Classic 200, 20 ft TT
2020 RAM 1500, 5.7 4x4, 8 speed