How far is Webster, SD from Spearfish, SD?
The driving distance from Webster, SD to Spearfish, SD is about 372.8 miles (599.9 km), with a travel time of about 06h 31m by car.
- The straight-line flight distance is about 315.5 miles (507.8 km).
- For a round trip, plan for roughly 13h 02m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 6:00 AM to 7:30 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 06h 31m.
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.
Township in Roberts County, South Dakota
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 Webster and Spearfish.
Turn-by-Turn Driving Directions
Step-by-step road directions between Webster and Spearfish.
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1
Start on East 7th Avenue
4 m · 2 sec · East 7th Avenue
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2
Turn right onto Main Street
3202 ft · 48 sec · Main Street
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3
Turn left onto West Highway 12
1 mi · 1 min · West Highway 12
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4
Continue on US Highway 12
28.9 mi · 33 min · US Highway 12
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5
Continue on East Highway 12
2.6 mi · 4 min · East Highway 12
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6
Continue on 133rd Street
13 mi · 14 min · 133rd Street
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7
Continue on US Highway 12 East
1 mi · 1 min · US Highway 12 East
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8
Continue on 6th Avenue Southeast
5.1 mi · 12 min · 6th Avenue Southeast
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9
Continue on US Highway 12 West
2.8 mi · 3 min · US Highway 12 West
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10
Continue on 134th Street
6.3 mi · 7 min · 134th Street
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11
Continue on US Highway 12
65.3 mi · 1 hr 14 min · US Highway 12
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12
Turn left onto US Highway 83
30.7 mi · 35 min · US Highway 83
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13
Continue on US Highway 83
36.2 mi · 41 min · US Highway 83
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14
Turn right
16.4 mi · 19 min
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15
Continue on North Euclid Avenue
1.6 km · 2 min · North Euclid Avenue
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16
Turn left onto South Pierre Street
564 ft · 14 sec · South Pierre Street
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17
Turn right onto West Sioux Avenue
1.5 km · 1 min · West Sioux Avenue
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18
Continue on North Highway 83
2352 ft · 31 sec · North Highway 83
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19
Turn right onto West Highway 14/34
1.2 mi · 1 min · West Highway 14/34
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20
Continue on US Highway 14/34
36.6 mi · 42 min · US Highway 14/34
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21
Continue on SD Highway 34/63
52.8 mi · 1 hr · SD Highway 34/63
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22
Continue straight
80.7 mi · 1 hr 32 min
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23
Continue on Lazelle Street
2.3 mi · 3 min · Lazelle Street
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24
Take the exit right
17.6 mi · 18 min
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25
Take the exit slight right toward Jackson Boulevard, Black Hills State University
1541 ft · 43 sec
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26
Turn left onto East Jackson Boulevard
1 km · 2 min · East Jackson Boulevard
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27
Turn left onto North Main Street
45 m · 14 sec · North Main Street
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28
Arrive at your destination
0 m · 1 sec · North Main Street
Car Route Details
A richer read on the saved driving route between Webster and Spearfish.
Long-distance drive
This route is long enough that fuel, rest stops, weather, and timing matter more than any single maneuver.
SD Highway 34/63
Continue straight
80.7 mi · 01h 32m
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.
Mostly Sunny leaving Webster 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 Webster to Spearfish?
The road trip is about 372.8 miles (599.9 km) and usually takes 06h 31m 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?
Alto is a useful midpoint, sitting about 201.9 miles from Webster and 170.8 miles from Spearfish.
How much longer is the road route than the straight-line distance?
The direct path is about 315.5 miles (507.8 km), while the road route adds roughly 57.3 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 CDT. 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 $49.59 one way or $99.18 round trip. Estimated CO2 is about 116.9 kg one way.
Do you cross a time zone on this route?
Yes. There is about a 1 hour time difference between Webster 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 Webster and Partly Sunny then Slight Chance Showers And Thunderstorms near Spearfish.
Flight Path Map
This map shows the direct air route between Webster and Spearfish. Straight-line distance: 315.5 mi (507.75 km).
#1 Webster
City in and county seat of Day County, South Dakota, United States
| Population | 1,694 |
| Coordinates | 45.3321800, -97.5200900 |
| Altitude | 566 |
| 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: 600 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 12h 25m |
| 40 mph (64.37 km/h) | 09h 19m |
| 50 mph (80.47 km/h) | 07h 27m |
| 60 mph (96.56 km/h) | 06h 12m |
| 70 mph (112.65 km/h) | 05h 19m |
| 80 mph (129 km/h) | 04h 39m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.77 | $49.59 | $99.18 |
| Mid-grade | $4.25 | $55.93 | $111.85 |
| Premium | $4.65 | $61.20 | $122.40 |
| Diesel | $5.30 | $69.75 | $139.50 |
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.