How far is Harrisburg, SD from Spearfish, SD?
The driving distance from Harrisburg, SD to Spearfish, SD is about 402.6 miles (648 km), with a travel time of about 05h 34m by car.
- The straight-line flight distance is about 363.5 miles (585 km).
- For a round trip, plan for roughly 11h 08m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 6:00 AM to 8:00 AM CDT.
Reverse, save, or send this route
This drive is better planned with a longer stop or an overnight stay. Copy the route link, send it to another device, or print a clean version before you head out.
This drive is better planned with a longer stop or an overnight stay.
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 05h 34m.
An early departure helps you fit a real stop into the day without turning the return into a late-night drive.
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.
Census-designated place in Lyman County, South Dakota, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Mostly Sunny
Partly Sunny then Slight Chance Showers And Thunderstorms
Driving Route Map
The map below follows the saved road route between Harrisburg and Spearfish.
Turn-by-Turn Driving Directions
Step-by-step road directions between Harrisburg and Spearfish.
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1
Start on East Willow Street
1.8 mi · 3 min · East Willow Street
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2
Continue on 273rd Street
3.2 mi · 6 min · 273rd Street
-
3
Take the ramp right
1644 ft · 40 sec
-
4
Merge slight left
12.5 mi · 14 min
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5
Take the exit slight right toward I 90 West: Rapid City
1236 ft · 30 sec
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6
Merge slight left
384.2 mi · 6 hr 6 min
-
7
Take the exit slight right toward Jackson Boulevard, Black Hills State University
1541 ft · 43 sec
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8
Turn left onto East Jackson Boulevard
1 km · 2 min · East Jackson Boulevard
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9
Turn left onto North Main Street
45 m · 14 sec · North Main Street
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10
Arrive at your destination
0 m · 1 sec · North Main Street
Car Route Details
A richer read on the saved driving route between Harrisburg and Spearfish.
Long-distance drive
This route is long enough that fuel, rest stops, weather, and timing matter more than any single maneuver.
I 90 West
Merge slight left
384 mi · 06h 06m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
A longer out-and-back drive
This is still possible in one day, but it becomes a long driving day. Leaving early and planning your stop window matters more here.
Mostly Sunny leaving Harrisburg and Partly Sunny then Slight Chance Showers And Thunderstorms near Spearfish.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Harrisburg to Spearfish?
The road trip is about 402.6 miles (648 km) and usually takes 05h 34m in normal driving conditions.
Is this a same-day trip or an overnight route?
This is still possible in one day, but it becomes a long driving day. Leaving early and planning your stop window matters more here.
What is the halfway point on this route?
Vivian is a useful midpoint, sitting about 201.1 miles from Harrisburg and 201.6 miles from Spearfish.
How much longer is the road route than the straight-line distance?
The direct path is about 363.5 miles (585 km), while the road route adds roughly 39.1 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 6:00 AM to 8:00 AM CDT. If you want a more comfortable same-day return, try to leave by 5:52 AM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $53.59 one way or $107.17 round trip. Estimated CO2 is about 126.3 kg one way.
Do you cross a time zone on this route?
Yes. There is about a 1 hour time difference between Harrisburg and Spearfish, so arrival and return times should be read in local time.
What should you check before leaving?
Before you leave, expect Mostly Sunny around Harrisburg and Partly Sunny then Slight Chance Showers And Thunderstorms near Spearfish.
Flight Path Map
This map shows the direct air route between Harrisburg and Spearfish. Straight-line distance: 363.51 mi (585.02 km).
#1 Harrisburg
City in South Dakota, United States of America
| Population | 7,126 |
| Coordinates | 43.4313700, -96.6972700 |
| Altitude | 435 |
| Country | United States |
#2 Spearfish
City in Lawrence County, South Dakota, United States
| Population | 11,900 |
| Coordinates | 44.4908200, -103.8593700 |
| Altitude | 1112 |
| Country | United States |
End: North Main Street (-103.859247, 44.49086)
Estimated Travel Time
Distance: 648 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 13h 24m |
| 40 mph (64.37 km/h) | 10h 04m |
| 50 mph (80.47 km/h) | 08h 03m |
| 60 mph (96.56 km/h) | 06h 42m |
| 70 mph (112.65 km/h) | 05h 45m |
| 80 mph (129 km/h) | 05h 01m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.77 | $53.59 | $107.17 |
| Mid-grade | $4.25 | $60.44 | $120.87 |
| Premium | $4.65 | $66.13 | $132.27 |
| Diesel | $5.30 | $75.37 | $150.74 |
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 23, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.