Public land: a small share, and who holds it
The Congressional Research Service splits South Dakota’s 2,645,668 federal acres five ways: the Forest Service with 2,006,708, the Bureau of Land Management with 275,738, the Fish and Wildlife Service with 207,116, the National Park Service with 148,022 and the Department of Defense with 8,084. At 5.4 percent of the state this is a fraction of what a driver finds in Wyoming or Montana, and the practical answer is to plan around a handful of large blocks rather than assume open country.
Forest Service ground comes in two kinds. The Black Hills National Forest is the timbered island in the southwest, 1.2 million acres across two states, and it is where the road network is. Out on the prairie the same agency runs the national grasslands: Buffalo Gap, almost 600,000 acres split between a Fall River Ranger District at Hot Springs and a Wall Ranger District at Wall, and Fort Pierre, about 116,000 acres south of the town of Fort Pierre between Interstate 90 and the Lower Brule Indian Reservation. The far northwest corner is worked from a Sioux Ranger District office at Camp Crook.
BLM South Dakota is small and scattered. Its field office at Belle Fourche manages over 274,000 surface acres, most of them west of the Missouri in 13 counties, with around 145,000 of those acres in Butte County alone. Its one developed recreation area is Fort Meade beside Sturgis, roughly 6,700 acres with a back country byway, two fee campgrounds and a 14-day stay limit.
The rest is state and tribal. Game, Fish and Parks runs Custer State Park, 71,000 acres in the southern Black Hills, and over 50 state parks and recreation areas that take campers, a long string of them on the Missouri River reservoirs the Corps of Engineers built. Reservation land is a large part of the map west of the river: the Park Service routes its drive around the Badlands South Unit onto BIA Highways 2 and 41, and the Forest Service describes Fort Pierre National Grassland as running west to the Lower Brule Indian Reservation.
Source 30
Seasons, wind and what closes
The Black Hills set the calendar at one end. Game, Fish and Parks says the Needles Highway closes to vehicles with the first snow of the season and does not reopen until April 1, or later depending on conditions, and that Iron Mountain Road closes periodically through the winter depending on conditions and how quickly it can be cleared safely. The Wildlife Loop Road stays open year round. On the national forest, campground fees run from about mid-May through October, which is a fair guide to the developed season.
On the prairie the roads stay open and the surface decides. The Park Service says Sage Creek Rim Road is open year round but can be rough during or after storms and may close in winter; that Sheep Mountain Table Road should not be driven during or after storms and is open all year but not in snow or ice; and that the paved Badlands Loop Road can be icy and slippery after a storm and occasionally closes in winter. Park weather runs from 116 degrees to minus 40, with 12 to 24 inches of snowfall in a typical winter and summer thunderstorms that bring hail and the occasional tornado.
Winter here is a travel decision more than a driving skill. The National Weather Service describes ground blizzards that develop with little or no new snow, when an Arctic front drops the temperature and raises winds that often gust 50 to 60 mph. The Department of Transportation runs plows from 5 a.m. to 7 p.m. during a storm, aims to cover interstate and priority routes about every two hours and other routes about every four, and points out that salt stops working below 15 degrees, at which point sand goes down for traction and traction is all it gives.
Source 14
What the state asks of a vehicle
Height and width come first, which is unusual. The best roads in the Black Hills go through holes cut in granite, and Game, Fish and Parks publishes the dimensions of five of them. The Forest Service adds that the narrowest tunnel on the Peter Norbeck Scenic Byway is 10 feet wide, that much of the byway is narrow with a 35 mph limit and switchbacks that drop to 10 mph, and that the whole route is still suitable for motor homes. Measure your build before you plan a loop around one of these.
Then legality. The Motor Vehicle Use Map is the legal document directing motorized traffic on the Black Hills National Forest. Signs on the ground are provided but not required, and the forest says plainly that it is your job to know where you are and whether your vehicle class is allowed. Roads are marked either for highway-legal vehicles only or for all vehicles, licensed and unlicensed. Trails are marked by width, at 50 or 62 inches, or as open to all vehicles on rugged narrow tracks the forest describes as intended for jeeps. A designation is permission, not a recommendation: the forest notes that a low-standard road open to all vehicles may still be a poor idea in a passenger car.
Clearance matters least and tires matter most. The only road on this page that the managing agency restricts by capability is Sheep Mountain Table, where the Park Service recommends four-wheel drive even in dry conditions and limits the last 2.5 miles past the overlook to high-clearance four-wheel drives. Everything else is drivable in a standard vehicle in good weather. What South Dakota tests is what happens when the weather turns: prairie clay that goes slick in minutes, two-track that ruts, and 90 miles between services on a road nobody plows first.
- 01Needles Eye Tunnel, Needles Highway: 8 feet 0 inches wide by 9 feet 9 inches high
- 02Iron Creek Tunnel, Needles Highway: 8 feet 9 inches wide by 10 feet 10 inches high
- 03Scovel Johnson Tunnel, Iron Mountain Road: 10 feet 9 inches wide by 11 feet 0 inches high
- 04C.C. Gideon Tunnel, Iron Mountain Road: 11 feet 6 inches wide by 10 feet 9 inches high
- 05Doane Robinson Tunnel, Iron Mountain Road: 12 feet 0 inches wide by 11 feet 4 inches high
Source 21
Passes and routes
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Interstate 90 at Exit 110 (Wall) and Exit 131, through the Badlands North Unit
The Park Service calls SD 240 a two-lane paved road appropriate for all motor vehicles, with several steep passes and sections at reduced speed limits, and puts the drive at one to two hours. It publishes no length for it, so none is given here. 15
- Vehicle
- Any car
- Season
- Year round. Can be icy and slippery after a storm, and occasionally closes in winter
-
SD 44 just east of Scenic, to the Badlands Loop Road just north of Pinnacles Overlook
A dirt and gravel road along the rim above the Badlands Wilderness, described by the Park Service as SD 590. Bison, bighorn and prairie dogs are frequently seen from it, and the park asks for a minimum of 100 feet between you and any animal. Pull into a designated overlook rather than stopping on the road. No length is published. 16
- Vehicle
- The Park Service publishes no vehicle requirement, and asks for caution in bad weather
- Season
- Open year round, but may close in winter and can be rough during or after storms
-
Sheep Mountain Table Road
5 miles to the overlook, plus 2.5 miles beyond
SD 27, 4.5 miles south of SD 44 at Scenic, into the Badlands South Unit
The one road into the South Unit. The Park Service puts it at five dirt miles up to the top of the table and an overlook, with another 2.5 miles beyond that are open only to high-clearance four-wheel drives, and says it should not be driven during or after storms. 17
- Vehicle
- Four-wheel drive recommended even in dry conditions. High-clearance four-wheel drive only past the overlook
- Season
- Open all year, but not in snow or ice, and not during or after storms
-
The drive around the Badlands South UnitPaved
41 miles described, Scenic to the BIA Highway 41 junction
Scenic south on SD 27, west on BIA Highway 2, north on BIA Highway 41 to Red Shirt and Hermosa
The Park Service describes 20 miles south on SD 27 to the White River Visitor Center at BIA Highway 2, 21 miles west on that highway to BIA Highway 41, then north past Red Shirt Table Overlook, about an hour one way from Scenic to Red Shirt. It warns that the area is part of a former bombing range and that anything resembling unexploded ordnance should be reported and left alone. 18
- Vehicle
- Any car
- Season
- Open year round, but can be icy and dangerous in winter weather
-
Needles HighwayPaved
14 miles
SD 87 north through Custer State Park past Sylvan Lake and the Needle’s Eye
Fourteen miles that Game, Fish and Parks budgets at 60 minutes or more, through ponderosa pine and granite spires laid out on foot and on horseback by Peter Norbeck and finished in 1922. Two tunnels set the limit: Needles Eye at 8 feet 0 inches by 9 feet 9 inches, and Iron Creek at 8 feet 9 inches by 10 feet 10 inches. 21
- Vehicle
- Any vehicle that fits. The Needles Eye Tunnel is 8 feet 0 inches wide by 9 feet 9 inches high
- Season
- Closes to vehicles with the first snow and does not reopen until April 1, or later
-
Iron Mountain RoadPaved
17 miles
Custer State Park to Mount Rushmore National Memorial on US 16A
Seventeen miles with three tunnels that frame Mount Rushmore in the distance and three pigtail bridges that circle a full 360 degrees to gain or lose height. The tunnels are Doane Robinson at 12 feet 0 inches by 11 feet 4 inches, C.C. Gideon at 11 feet 6 inches by 10 feet 9 inches and Scovel Johnson at 10 feet 9 inches by 11 feet 0 inches. Norbeck’s own instruction was to drive it no faster than 20 mph. 21
- Vehicle
- Any vehicle under 10 feet 9 inches wide and 10 feet 9 inches high
- Season
- Open year round, but closes periodically in winter depending on conditions
-
Wildlife Loop RoadPaved
18 miles
A loop through the southern prairie of Custer State Park. Where it meets SD 87, US 16A is five miles north
Eighteen miles that Game, Fish and Parks budgets at an hour and a half, because the park’s 1,350 free roaming buffalo set the pace. Elk and deer show early and late; burros and prairie dogs are on the road itself. Park rules are to stay in the vehicle or keep at least 100 yards back. 21
- Vehicle
- Any car
- Season
- Open year round, with careful driving in winter conditions
-
Peter Norbeck Scenic BywayPaved
70 miles
Mount Rushmore and Custer State Park, in two loops near Custer and Hill City
The Forest Service describes two loops totaling 70 miles on parts of US 16A and SD 87, 89 and 244. All of it is paved, much of it is narrow at 35 mph, and some switchbacks drop to 10 mph. The byway takes in both the Needles Highway and Iron Mountain Road and completely encircles the 13,534-acre Black Elk Wilderness, where motorized and mechanized travel is prohibited. 6
- Vehicle
- Suitable for motor homes, but the narrowest tunnel is 10 feet wide
- Season
- Parts of it close in winter with the Needles Highway and Iron Mountain Road
-
Spearfish Canyon Scenic BywayPaved
5,300 ft 20 miles
Spearfish and Cheyenne Crossing on US 14A
Twenty miles along Spearfish Creek under limestone walls, with gentle grades because the road follows the creek. The Forest Service says the upper five miles are narrower but still suit an RV, posts the limit at 35 mph, and notes the road climbs from 3,800 feet at the north end to 5,300 at the south, so weather and surface change as you go. 6
- Vehicle
- Any vehicle, including recreational vehicles and motor homes
- Season
- Open year round. A popular fall-color drive in late September and early October
-
Fort Meade Back Country Byway
4.5 miles
Interstate 90 at Exit 34 to Highway 34/79, about half a mile east of Sturgis
The BLM’s one byway in South Dakota: 4.5 miles of gravel across the south half of the 6,700-acre Fort Meade Recreation Area, with interpretive signs at places of historical interest. Eleven miles of the 111-mile Centennial Trail cross the same unit. Camping is at the Alkali Creek Trailhead and Horsecamp, both fee sites, with a 14-day stay limit. 31
- Vehicle
- No vehicle requirement is published. Gravel, and not maintained in winter
- Season
- Open year round, weather permitting. There is no winter maintenance
-
Railroad Buttes and Baja OHV areas
Buffalo Gap National Grassland, on the Wall Ranger District
The two named riding areas on the grassland. Railroad Buttes adds three large open-riding areas totaling 1,745 acres to miles of trail, split into a north hill climb, a west and an east area. Baja covers approximately 1,335 acres open to motorized cross-country travel. Fireworks and shooting are prohibited at Railroad Buttes. 25
- Vehicle
- Off-highway vehicles. Stay inside the boundaries of areas open to cross-country travel
- Season
- Open year round. No fees
-
Fort Pierre National Grassland roads
US 83 south of Pierre, between Interstate 90 and the Lower Brule Indian Reservation
About 116,000 acres of open grassland split nearly in half by US 83, two thirds east of the highway and one third west, beginning roughly 24 miles south of Pierre. The Forest Service describes it as prairie-chicken and sharp-tailed grouse country with stock ponds and two significant dispersed recreation areas at Richland and Sheriff dams. 28
- Vehicle
- No vehicle requirement is published. No fees or permits are required for access
- Season
- Open year round
-
Oahe Downstream Recreation Area
Highway 1806, five miles north of Fort Pierre
The recreation area sits on the south side of the Oahe Dam and holds three campgrounds with 205 sites between them, which makes it the largest concentration of camping on the river in this guide. The Corps of Engineers began the dam in 1948 and it started generating in 1962; the reservoir behind it runs 231 miles and connects the capital cities of two states, which is the scale the Missouri works at here. 23
-
The park is one of the few places in South Dakota where the animals have as much claim on the road as the traffic. The Park Service states that bison, elk and other wildlife roam at will throughout most of the park, and that roads may be closed during heavy snowfall, so conditions are worth checking before the drive rather than at the gate. It adjoins Custer State Park, so the two are usually driven in one day. 19
- Season
- Roads may close during heavy snowfall; check conditions before driving in
Rules worth knowing
- A ground blizzard needs no falling snow
- The Weather Service describes a hazard that catches people who judge winter by the forecast: ground blizzards develop with little or no concurrent or new snowfall, when an Arctic cold front moves through, temperatures drop and winds increase rapidly, often gusting 50 to 60 mph. Old snow is all it takes. A clear sky and a clean road at breakfast is not a guarantee of either by mid-afternoon, and on the plains the visibility goes before the traction does. 34
- Dispersed camping on the grassland is marked, and capped at fourteen days
- The Pinnacles Dispersed Camping Area sits south of Wall, just outside the Badlands’ Pinnacles entrance, and the Forest Service has marked 70 designated camping sites there with wooden posts. A 14-day stay limit applies year round. The one instruction the agency adds is about the ground rather than the rules: avoid driving in wet conditions, because the damage is what closes places like this. 26
- State park camping opens 90 days out, and a year out at Custer
- Over 50 state parks and recreation areas offer camping in South Dakota, and Game, Fish and Parks takes reservations in most of them within 90 days of arrival. Custer State Park is the exception and books a full year ahead, which is what you would expect of the one people plan a holiday around. In a state where public camping is thin, that difference in the booking window is most of the planning. 22
- In the Badlands, expect no signal and no reliable navigation
- The Park Service states plainly that Badlands National Park is in a rural part of the country where cell service is not always available and GPS directions are not always reliable. It also sets out what the roads are: in the North Unit the two main ones are the Badlands Loop Road and the Sage Creek Rim Road, and the South Unit has no roads that go directly through it, so a visitor drives up Sheep Mountain Table or takes the scenic drive around the outside. Carry the paper map and know which unit you are aiming at. 13
- The northwest corner is run from another state
- The Sioux Ranger District of the Custer Gallatin National Forest covers the far northwest of South Dakota from an office at 101 SE First Street in Camp Crook, and the forest it belongs to is headquartered in Montana. If you are asking about conditions, closures or motor vehicle use in that corner, that is the district to ask, not the Black Hills. 29
- The grasslands have a front door, and it is in Wall
- The National Grasslands Visitor Center at 708 Main Street in Wall, off Interstate 90 at Exit 110, is the one place in the country that introduces all 20 national grasslands and the Midewin National Tallgrass Prairie together. It is worth an hour before driving Buffalo Gap, because the grasslands are the least legible public land in this guide and the maps are the whole game. 27
- The Black Hills camping limit changed in 2026
- Forest Order BKF-197-2026 limits camping or occupancy anywhere on the Black Hills National Forest to 14 calendar days, counting parts of days, in any continuous 28-day period. It runs from August 8, 2026 to December 31, 2031. The forest’s recreation pages still print the older rule of 14 days in any 60-day period, so expect to see both. The order sets no distance you must move afterwards. Developed campgrounds have their own 14-consecutive-day limit. 10
- Where a vehicle may leave the road to camp
- You may camp with a motor vehicle only where the dispersed camping symbol appears on the Motor Vehicle Use Map, and only within the distance the map gives, up to 300 feet from certain designated roads. That covers roughly 135,500 acres. Camp 100 feet from any creek or stream and half a mile from developed recreation sites. Around developed reservoirs, lakes and campgrounds, camping is only allowed in designated sites. Violating the travel rule under 36 CFR 261.13 carries a fine of up to $5,000. 9
- No wood fire outside a developed campground in the South Dakota Hills
- On the South Dakota side of the Black Hills National Forest you may have a campfire only in established campfire grills and grates at designated recreation sites. Gas and fuel-powered stoves are allowed outside developed campgrounds unless a special fire restriction order is in force. The Wyoming portion is different: campfires are allowed in undeveloped areas there after clearing the vegetation and building a ring. Restrictions are set by forest order and posted on the forest’s fire pages. 11
- Two permits, and neither one covers the other
- In the South Dakota part of the forest, a motor vehicle on a designated motorized trail, or an unlicensed vehicle on a forest road designated open to all vehicles, must display a valid Black Hills National Forest Motorized Trail Permit. A plated vehicle on a designated open road does not need one. No forest trail permit is required on the Wyoming trails. Separately, South Dakota sells a non-resident off-road vehicle permit for $50 a year plus a $2.50 mailing fee, and the state says plainly that it covers roads and highways, not Forest Service trails. 8
- What counts as an off-road vehicle, and what makes one street legal
- South Dakota defines an off-road vehicle as any self-propelled vehicle with two or more wheels designed to be operated on land other than a highway, and says such vehicles may not be registered and licensed for highway use but must be titled. For an out-of-state machine to be street legal here it needs a hard plate from its home state, not a paper one, has to be road-legal at home, and must carry a mirror, horn, headlights, tail, brake, parking and plate lights and a muffler, with at least 200cc on four wheels or 120cc on two. 32
- The state can close any highway, and a rescue has a price
- Under SDCL 31-4-14.1 the Secretaries of Transportation and Public Safety may together restrict or close any state highway when they agree it is necessary for public safety in bad weather, and the department says it will now consider closing non-interstate routes as well as interstates. SDCL 31-4-14.3 provides civil penalties of $1,000 to $10,000 for rescuing someone who went in anyway. SD511 carries five levels: road impassable, no travel advised, road blocked, maintenance suspended, and an inclement weather road closure. 33
- Custer State Park charges at the gate, and the animals have right of way
- Custer State Park sells its own park entrance license: $25 per vehicle or $20 per motorcycle for one to seven days, or an annual license at $40 for residents and $60 for non-residents. Vehicles traveling non-stop through the park on US 16A do not need one. Inside the park the rule with the bison, elk and burros is to stay in your vehicle or keep at least 100 yards back. Between October 1 and April 30, showers, flush toilets and other water systems may be closed. 20