Five below zero here currently but our Ridgeline and Bullet Crossfire trailer are already conspiring making plans to take us through eastern Montana, the Black Hills and Devils Tower the first part of June, any itinerary suggestions would be greatly appreciated!
We really like the Black Hills, SD area and have been out there several times - the last time was just last September.
There's a lot to see and do out there, so your itinerary really depends on what you like to do. For example I love driving Iron Mountain Road (16A) and Needles Highway (87), but with all the switchbacks and corkscrews I think my wife would rather skip them. I thought the views from up on
Mount Coolidge Lookout were totally worth the little detour, but she thought we were going to fall off the edge of the one lane gravel road on the way up and tumble down the mountain. On the other hand, she absolutely loves seeing the herd of wild donkeys in Custer and would spend a long time looking for them. We've managed to find them every time we've been there. She's sure to stop at a local grocery store and pick up the cheapest bag of apples and carrots beforehand. Note that it's illegal to feed the wildlife.
Hill City is not far to the north of where you'll be camping, and Custer is to the south. Both have restaurants, bars, groceries, gas, hardware stores, etc...
Some things are VERY touristy, but you're going to be RIGHT THERE so you might as well pay the fee and check them out. This would be things like Mt. Rushmore, Crazy Horse, Wall Drug, etc... If you want, you can stop in Sturgis to see where the motorcycle gathering happens every year. Not far from Sturgis is Deadwood where I think they have a shootout on the street every day during tourist season.
Iron Mountain Road (16A) has several one-lane tunnels and is a very twisty and winding and scenic road.
Similarly, Needles Highway (87) also has one-lane tunnels and is very twisty and scenic. You can stop
here and find the Needles Eye rock formation and even hike up over the tunnel to the crack looking down on the traffic passing through the tunnel.
I highly recommend unhitching your camper and driving both roads and taking your time and stopping often. Note that some of the tunnels are perfectly aligned with Mt. Rushmore so you can look through the tunnel and see Mt. Rushmore off in the distance.
A lot of people like to see the buffalo roaming in Custer State Park. If you want, you can stop at the Custer State Park Visitors Center
here to pick up info or a map. But otherwise, just jump on the Wildlife Loop road
here and head south. We had a buffalo scratch his head on the front of our car near French Creek one time
here. Several times we've found the wild donkeys near
here. On warm days it seems like they like to congregate under the trees near there or on the gravel road a little to the east, or maybe under the trees just south of the Bison Center
here. The last time we found the donkeys, they were way south near the south gate
here. But the buffalo are usually pretty easy to find because the herd is so big. If you're having problems finding them, just follow one of the painted up buffalo safari stretched Jeeps and it'll lead you right to them.
There are lots of amazing hikes in the Black Hills, depending on what you want to tackle. For example:
Sylvan Lake has a nice little general store where you can get surprisingly good pizza and ice cream. There's an easy hike (walk) that circles the lake. That's
here.
Cathedral Spires is a fairly easy hike with some rocky stair-steps. Trailhead is
here. The parking at that trailhead tends to fill up but you can also park down the road
here. The payoff for that hike is standing in the middle of a ring of tall rocks tipped up on end that would look more at home on another planet.
Little Devils Tower is a longer hike. It starts easy and progresses in difficulty. At about 3/4 the way, it gets hilly, but still technically easy. The very end is technically much more difficult where you're squeezing through crevasses, rock scrambling, and hoping your shoes are grippy enough as you climb smooth rock faces at steep angles. But the reward is a commanding panoramic view at 6,971 feet that's breathtaking. The trailhead is
here.
At 7,244 feet, Black Elk Peak is the highest summit in the United States east of the Rocky Mountains. It is even more challenging, but then you get to confidently wear a Black Elk Peak T-shirt, sweatshirt, or hat. The trailhead starts at Sylvan Lake,
here.
Farther south is Wind Cave, if you like guided cave tours. That's
here.
There's also the Mammoth site
here in Hot Springs where they're excavating an ancient sinkhole that contains dozens of mammoth skeletons.
To the east of the Black Hills is the Badlands. I think it's totally worth the roughly hour drive to the east to check out. Heading east on I90 from the Rapid City area, you can stop at Wall and hit the grocery store or Dairy Queen or Wall Drug
here to pick up your free bumper sticker. You can walk the street in front of Wall Drug for touristy shopping if you're looking for some Black Hills gold jewelry or trinkets or whatnot. Then head south and stop at the park entrance and pay your fee
here. Then you can head into the Badlands and check it out. There are lots of interesting places to stop and see the really odd topography. I highly recommend getting out and at least walking around in some of the mounds or whatnot. If it's not too hot, you can pack a lunch and eat at one of the many covered picnic tables. There are also good hiking opportunities in the Badlands, such as
Notch Trail where you get to climb up an aircraft cable and log ladder. When exiting back toward the interstate to the north, you'll be right at the Minuteman Missile Silo National Historic Site,
here.
So again, there's a lot to see and do, it just depends on what you're into.
Edit to update all of the links.