My family and I experienced Glacier, Yellowstone and the Grand Tetons last June as part of a 9 month excursion. We made it to Glacier on June 8th, the day they reopened, and I have to say, avoid this timeframe. The park is beautiful and vast, but we were severely limited in what we could see. The road was only clear to Lake McDonald Lodge, as Going to the Sun road was still closed due to snow. As I have come to understand, peak times to visit are July and August. I will make it back someday. That said, there are plenty of dispersed camping spots, and inexpensive National Forest sites nearby. We stayed at
Murray Bay Campground on Hungry Horse Reservoir. Sites are inexpensive, well spaced, have a fire ring, picnic table, and clean vault toilets. There is great trout fishing on the reservoir. There are plenty of other dispersed campsites along the forestry road, and nearly every turn off is accessible by vehicle and will provide you with tremendous views and waterside camping.
To access the West Yellowstone gate, we discovered a dispersed camping spot just south of
Box Canyon Campground in Island Park Idaho. There are 2-3 spots in this location, all of which are free, and first come, first served. Fire rings are available, and sites are positioned right along the Henry's Fork River. Access to Yellowstone is a reasonably short drive from this location, but you will want to plan to leave early to avoid the large crowds. We were confronted with large crowds at all trailheads in Mid June.
To access the Tetons and the South Entrance to Yellowstone we took Rt. 22 over Teton Pass into Jackson, WY. This is a beautiful drive, and despite the paved road I highly encourage this route. While you could stay at the Gros Ventre Campground, I would highly encourage you to continue on that same road, pass the campground, to the
Antelope Flats. Here there are a few select dispersed camping spots, all free, first-come, first-served, and with INCREDIBLE views of the Tetons. They are almost always full and you might have to stalk the site, or you could continue up the fire road to the right which will lead you to numerous other dispersed sites. Bring your mountain bike as there is a beautiful, not too technical, loop trail through this region.
Good Luck with your journey! I can't wait to travel out West again.
While this worked fo us, you may discover that there are other areas that you'll want to visit. There is so much to explore! A great utility I have used is the app
Campendium. This is an app popular with RV'ers, but highlights numerous dispersed camping spots or "boon docking" spots throughout the area.