Going to Glacier was on my bucket list and we made the trip this summer
We stayed at Mountain Meadow RV Park & Cabins Hungry Horse, Montana. It is close to the west entrance. We made out reservations in March. Our trailer is 34' long and our truck is just a little over 21'. We enjoyed the stay - full hook ups. All of the sites are in the trees. Close to west Glacier and the folks that run the campground were great.
We did the Red Bus Crown of the Continent tour - well worth the $. Left the parking lot at 8:30am and returned at 6:30pm. It was slowed because of the road construction - it should be completed by now. If I had been driving our truck I would have missed allot. We were there in the middle of August and we had to cover with wool blankets (provided by the tour) at the beginning of the trip and took them off a couple of hours later.
We had out 15 year old grandson with us and it was a trip he will remember for years to come.
One day we drove from the campground to to the St. Mary entrance and back to the campground (Highway 2)
Try some huckleberry pie the the Huckleberry Patch.
I do not know how much time you have but Yellowstone is not that far away. We stayed at Rocky Mountain RV Park & Lodging, LLC 14 Jardine Road Gardiner, Montana.
I plotted a trip on Microsoft Street and Trips and it had you going through Rapid City - would be a shame to miss Mount Rushmore.
2017 Keystone Avalanche 320RS
TV - 2011 Chevy Silverado 3500HD LTZ CCLB Duramax SRW 4X4