driving 3000 miles from massachusetts to washington to pick up new camper in late April. Looking for good places to stop on the way home and make a vacation of it.
If you are taking I90 west/east there are a lot of places to think about along that route. Glacier NP may not be open,but if it is that is a good trip.There are some lakes on the west side near the Canadian border.I stayed at Bowman but I don't think it will be open end of April.Not much in Glacier will be open at that time,but check out the site.
Yellowstone is starting to come to life at that time.The northern area is open year round but only one campground, Mammoth hot springs, open that time of year.Two others may be open on your return trip east,Norris and Madison open the first week of May.You can make a reservation at Madison.It is a nice camp although it is large,but the rivers are right there and lots of animals. It's worth going though.Spring is great all the new born critters are fun to watch.If you are a fisher the season opens later in May I think.
If you have any interest in the Custer battlefield that is a short drive off I90 in the Billings Mont.area.The only "camping" there is at 7th Ranch RV park.We stayed there last October.It's clean and well run,but it's the only thing near the battlefield, about 5 miles away.
East of that also on I90 is the Teddy Roosevelt NP.there are 2 camping areas one at the visitors center area and the other north about an hour or less.This place is definitely worth a stop at least.The entrance off I90 has a nice 35 mile loop drive that gives you a good view of the area and lots of animals.
If you go to my blog sharychic.blogspot.com I have some photos posted from our fall trip.
Hope this info is of some help.
Good luck with your trip planing.
Frank