How far is Keystone, SD from Hill City, SD?
The driving distance from Keystone, SD to Hill City, SD is about 12.1 miles (19.4 km), with a travel time of about 00h 16m by car.
- The straight-line flight distance is about 8.2 miles (13.2 km).
- For a round trip, plan for roughly 00h 33m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 7:00 AM to 7:00 PM MDT.
Reverse, save, or send this route
This is an easy same-day return drive. Copy the route link, send it to another device, or print a clean version before you head out.
This is an easy same-day return drive.
Flight Distance
Driving Distance
Gas Cost Calculator
Leave and Arrive Planner
Pick a departure time to see your estimated arrival and same-day return window.
Drive time stays fixed at 00h 16m.
This is a short drive, so your comfort window is wide. Traffic and current weather matter more than the clock.
You are leaving earlier than the recommended window, which gives you extra margin for breaks and traffic.
Halfway Point
A useful midpoint for breaks, coffee, or meeting in the middle.
Township in Pennington County, South Dakota
Route Weather Snapshot
Check the forecast at both ends before you head out.
Driving Route Map
The map below follows the saved road route between Keystone and Hill City.
Turn-by-Turn Driving Directions
Step-by-step road directions between Keystone and Hill City.
-
1
Start on the route
28 m · 12 sec
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2
Turn left onto 1st Street
155 m · 17 sec · 1st Street
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3
Continue on Reed Street
1798 ft · 1 min · Reed Street
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4
Turn right onto Highway 16A
2.3 mi · 4 min · Highway 16A
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5
Keep slight left
1824 ft · 50 sec
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6
Merge slight right onto South Highway 16
5.3 mi · 7 min · South Highway 16
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7
Continue on Highway 385
3 mi · 5 min · Highway 385
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8
Continue on East Main Street
1.1 km · 2 min · East Main Street
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9
Turn left onto Elm Street
19 m · 4 sec · Elm Street
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10
Arrive at your destination
0 m · 1 sec · Elm Street
Car Route Details
A richer read on the saved driving route between Keystone and Hill City.
Turn-heavy local drive
The route has frequent decision points for its length, so lane choice and turn timing will matter more than cruising speed.
South Highway 16
Merge slight right onto South Highway 16
5.25 mi · 00h 07m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
A short regional drive
This route is short enough to handle as a quick errand, commute, or easy same-day return without much planning overhead.
Sunny leaving Keystone and Sunny near Hill City.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Keystone to Hill City?
The road trip is about 12.1 miles (19.4 km) and usually takes 00h 16m in normal driving conditions.
Is this a same-day trip or an overnight route?
This route is short enough to handle as a quick errand, commute, or easy same-day return without much planning overhead.
What is the halfway point on this route?
Colonial Pine Hills is a useful midpoint, sitting about 6 miles from Keystone and 6 miles from Hill City.
How much longer is the road route than the straight-line distance?
The direct path is about 8.2 miles (13.2 km), while the road route adds roughly 3.9 extra miles because roads do not follow the straight air line.
When is the best time to leave for this route?
A good departure window is usually 7:00 AM to 7:00 PM MDT. If you want a more comfortable same-day return, try to leave by 7:56 PM MDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $1.62 one way or $3.24 round trip. Estimated CO2 is about 3.8 kg one way.
What should you check before leaving?
Before you leave, expect Sunny around Keystone and Sunny near Hill City.
Flight Path Map
This map shows the direct air route between Keystone and Hill City. Straight-line distance: 8.22 mi (13.23 km).
#1 Keystone
Town in Pennington County, South Dakota
| Population | 352 |
| Coordinates | 43.8955400, -103.4182500 |
| Altitude | 1320 |
| Country | United States |
#2 Hill City
City in South Dakota, United States of America
| Population | 1,032 |
| Coordinates | 43.9324900, -103.5751900 |
| Altitude | 1519 |
| Country | United States |
End: Elm Street (-103.575184, 43.932526)
Estimated Travel Time
Distance: 19 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 00h 24m |
| 40 mph (64.37 km/h) | 00h 18m |
| 50 mph (80.47 km/h) | 00h 14m |
| 60 mph (96.56 km/h) | 00h 12m |
| 70 mph (112.65 km/h) | 00h 10m |
| 80 mph (129 km/h) | 00h 09m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.77 | $1.62 | $3.24 |
| Mid-grade | $4.25 | $1.83 | $3.66 |
| Premium | $4.65 | $2.00 | $4.00 |
| Diesel | $5.30 | $2.28 | $4.56 |
Assumes 8.3 L/100 km (about 28.3 MPG). CO2 is an estimate and varies by vehicle, fuel blend, traffic, and terrain.
Prices in South Dakota · Apr 19, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.