Driving
Keystone to Hill City
Updated: 28 May 2026
The drive from Keystone to Hill City is a short 15-mile trip along Highway 16A, also known as the Iron Mountain Road. This route is famous for its pigtail bridges and tunnels that frame Mount Rushmore. It takes about 20 to 25 minutes to complete. It is one of the most scenic short drives in the United States.
Total Distance: 25 km driving, 20 km air distance.
Fastest Way
Driving takes about 25 minutes.
Cheapest Way
Driving your own vehicle.
Compare Keystone to Hill City Routes
Driving
Direct
Duration
25 mins
Avg Price
$3-$5 in fuel
Operator
Personal Vehicle
Route
SD-16A (Iron Mountain Road).
Drive slowly to enjoy the unique architecture of the bridges.
Travel Tips
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SpeedThe speed limit is low due to the winding nature of the road.
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PhotographyThere are several pull-offs for photos of Mount Rushmore.
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Vehicle SizeLarge RVs may have difficulty with the narrow tunnels on 16A.
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FuelFill up in Keystone before starting the drive.
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TimingAvoid the road during peak holiday weekends to escape traffic.
Safety Tips
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CurvesThe road is very winding; keep both hands on the wheel.
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WildlifeWatch for mountain goats and deer near the road.
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WeatherThe road can be icy in early spring or late autumn.
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EmergencyCell service is spotty on the winding sections of 16A.
People Also Ask
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Is it a scenic road?Yes, it is one of the most scenic roads in the country.
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How long is the drive?About 20-25 minutes.
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Are there tunnels?Yes, there are several narrow tunnels.
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Can I take an RV?Check tunnel height restrictions before driving an RV.
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Is it open in winter?It may close during heavy snow.
Quick Info
- From Keystone, South Dakota, United States
- To Hill City, South Dakota, United States
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Modes
Best Time to Travel
Summer and early autumn for the best views of the changing leaves.
Things to Do in Hill City
1
Iron Mountain Road
Experience the famous pigtail bridges and tunnels on this historic scenic byway.
2
1880 Train
Ride the historic steam train from Hill City for a nostalgic journey through the Black Hills.
3
Black Hills Central Railroad
Visit the depot in Hill City to learn about the history of rail in the region.
4
Art Galleries
Explore the local art galleries in downtown Hill City featuring regional artists.
Tags
Keystone to Hill City
driving to Hill City
Black Hills travel
Keystone SD to Hill City SD
short drive in South Dakota
scenic route Black Hills
local travel
Hill City access
