Needles Highway, South Dakota Highway 87, is a fourteen-mile road through Custer State Park that takes at least an hour to drive and a lot longer if you stop. The route winds through ponderosa and spruce forest, past meadows and between tall granite spires that give the road its name. Its signature moments are two narrow tunnels: the Needles Eye Tunnel, about eight feet wide and just under ten feet high, and the Iron Creek Tunnel, slightly wider and taller. Wide vehicles, large RVs and trailers cannot pass, so check dimensions before you commit. The road was planned by Peter Norbeck and completed in 1922, and it still feels like an engineering adventure. It passes Sylvan Lake and the Needle's Eye rock formation, which makes it a natural combination with a lakeside stop. The road closes to motor vehicles with the first snow of the season and reopens in April or later, depending on conditions. When closed, it is open to hiking, biking, snowshoeing and skiing when conditions allow.
The drive rewards patience. Speeds are slow, the curves are tight and the tunnels require careful judgment, particularly when oncoming traffic is present. Many drivers honk before entering a tunnel to warn others, and it is common to wait for a gap. The scenery changes constantly, with spires emerging from the forest, views opening over valleys and tiny pull-offs for photographs.
Early morning is the best time, with softer light and less traffic, and late afternoon works well in summer. In peak season, the road can back up, so build in extra time and do not schedule a tight connection afterward.
Know your vehicle. Motorcycles and ordinary cars manage fine, but anything wide, tall or long will struggle or fail, and drivers of rented RVs should plan an alternative route. The road is not suitable for large trailers, and some drivers report mirror-scraping moments in the narrowest sections. Pull over only at designated spots, watch for cyclists and hikers, and keep an eye on the weather, since a sudden storm or early snow can change conditions quickly.
The park entrance license is required, and the road is part of the Peter Norbeck Scenic Byway, which also includes Iron Mountain Road and the Wildlife Loop.
Combine it with other stops. Sylvan Lake is the obvious pairing, with its granite shoreline and short loop trail, and trailheads along the road lead to Cathedral Spires and Black Elk Peak. A full loop from Custer, Needles Highway to Sylvan Lake and back via the Wildlife Loop, makes a good half day.
Day tours from Rapid City include the road, and motorcycle riders often make it a highlight of their trip. Outside the open season, enjoy it on foot or skis, and check conditions with the park before you go. Treat it as a destination in itself, not a shortcut between towns.
What to expect
The experience
A fourteen-mile winding drive through Custer State Park with two narrow tunnels and granite spires on both sides.
Best time
Open from spring to the first snow. Early morning is best for light and fewer cars.
How long
At least an hour, longer with photo stops and Sylvan Lake.
Tips
Check vehicle width before you go: the narrowest tunnel is about eight feet wide. Allow extra time in peak season and bring the park entrance license.
Quick picks
- Best for
- Drivers and motorcyclists who want the Black Hills' most dramatic road.
- Families
- A thrill for older children, though the curves can upset small stomachs.
- Couples
- A scenic drive with a lakeside stop at Sylvan Lake.
- Pair with
- Sylvan Lake, Cathedral Spires Trail and Iron Mountain Road.
- Time needed
- One to two hours.
Good questions
How long is Needles Highway?+
Fourteen miles. It takes at least an hour, and more with photo stops and a visit to Sylvan Lake.
Can an RV or trailer use it?+
Generally no. The tunnels are narrow, with the tightest about eight feet wide, so large or wide vehicles cannot pass. Check dimensions and plan an alternative.
Is it open in winter?+
No, it closes to vehicles with the first snow and reopens in April or later. When closed, it is open to hikers, bikers, snowshoers and skiers when conditions allow.
Do we need a park pass?+
Yes, the road is inside Custer State Park, so the park entrance license applies. National park passes do not cover it.
What is the best time of day?+
Early morning, when the light is soft and the road is quiet. Late afternoon in summer also works, though traffic is heavier.
