How far is Spearfish, SD from Garretson, SD?
The driving distance from Spearfish, SD to Garretson, SD is about 406 miles (653.4 km), with a travel time of about 06h 34m by car.
- The straight-line flight distance is about 368.7 miles (593.4 km).
- For a round trip, plan for roughly 13h 08m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 6:00 AM to 7:30 AM MDT.
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 06h 34m.
Starting early still helps, but most travelers will want a longer stop or an overnight stay on a route this long.
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.
Rain And Snow Showers
Chance Rain Showers
Driving Route Map
The map below follows the saved road route between Spearfish and Garretson.
Turn-by-Turn Driving Directions
Step-by-step road directions between Spearfish and Garretson.
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1
Start on North Main Street
26 m · 30 sec · North Main Street
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2
Continue on North Main Street
51 m · 10 sec · North Main Street
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3
Turn right onto East Jackson Boulevard
2777 ft · 2 min · East Jackson Boulevard
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4
Take the ramp right toward I 90 East, US 85 South
1555 ft · 38 sec
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5
Merge slight left
14.2 mi · 14 min
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6
Continue straight
7.6 mi · 8 min
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7
Continue straight
23.6 mi · 24 min
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8
Continue straight
348.6 mi · 5 hr 31 min
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9
Take the exit slight right toward SD 11: Corson, Brandon
1100 ft · 27 sec
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10
Keep slight left
59 m · 5 sec
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11
Turn straight onto North Splitrock Boulevard
145 m · 11 sec · North Splitrock Boulevard
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12
Continue on 482nd Avenue
6.4 mi · 8 min · 482nd Avenue
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13
Continue on 254th Street
2.8 mi · 3 min · 254th Street
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14
Continue on 485th Avenue
2295 ft · 43 sec · 485th Avenue
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15
Continue on River Avenue
1 km · 1 min · River Avenue
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16
Turn right onto 5th Street
2349 ft · 1 min · 5th Street
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17
Turn right onto North Main Avenue
89 m · 8 sec · North Main Avenue
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18
Arrive at your destination
0 m · 1 sec · North Main Avenue
Car Route Details
A richer read on the saved driving route between Spearfish and Garretson.
Long-distance drive
This route is long enough that fuel, rest stops, weather, and timing matter more than any single maneuver.
I 90 East
Continue straight
349 mi · 05h 31m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
Better with a longer stop
This route is long enough that most travelers will be better off planning an overnight stay or a more deliberate stop window.
Rain And Snow Showers leaving Spearfish and Chance Rain Showers near Garretson.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Spearfish to Garretson?
The road trip is about 406 miles (653.4 km) and usually takes 06h 34m in normal driving conditions.
Is this a same-day trip or an overnight route?
This route is long enough that most travelers will be better off planning an overnight stay or a more deliberate stop window.
What is the halfway point on this route?
Vivian is a useful midpoint, sitting about 202.6 miles from Spearfish and 203.4 miles from Garretson.
How much longer is the road route than the straight-line distance?
The direct path is about 368.7 miles (593.4 km), while the road route adds roughly 37.3 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 7:30 AM MDT. Starting early still helps, but most travelers will want a longer stop or an overnight stay on a route this long.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $54.04 one way or $108.08 round trip. Estimated CO2 is about 127.4 kg one way.
Do you cross a time zone on this route?
Yes. There is about a 1 hour time difference between Spearfish and Garretson, so arrival and return times should be read in local time.
What should you check before leaving?
Before you leave, expect Rain And Snow Showers around Spearfish and Chance Rain Showers near Garretson.
Flight Path Map
This map shows the direct air route between Spearfish and Garretson. Straight-line distance: 368.75 mi (593.44 km).
#1 Spearfish
City in Lawrence County, South Dakota, United States
| Population | 11,900 |
| Coordinates | 44.4908200, -103.8593700 |
| Altitude | 1112 |
| Country | United States |
#2 Garretson
City in South Dakota, United States of America
| Population | 1,147 |
| Coordinates | 43.7174700, -96.5028200 |
| Altitude | 458 |
| Country | United States |
End: Garretson (-96.50282, 43.71747)
Estimated Travel Time
Distance: 653 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 13h 31m |
| 40 mph (64.37 km/h) | 10h 09m |
| 50 mph (80.47 km/h) | 08h 07m |
| 60 mph (96.56 km/h) | 06h 45m |
| 70 mph (112.65 km/h) | 05h 48m |
| 80 mph (129 km/h) | 05h 03m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.77 | $54.04 | $108.08 |
| Mid-grade | $4.25 | $60.95 | $121.89 |
| Premium | $4.65 | $66.69 | $133.38 |
| Diesel | $5.30 | $76.01 | $152.01 |
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.