How far is Spearfish, SD from Dakota Dunes, SD?
The driving distance from Spearfish, SD to Dakota Dunes, SD is about 469.9 miles (756.2 km), with a travel time of about 07h 36m by car.
- The straight-line flight distance is about 394.5 miles (634.9 km).
- For a round trip, plan for roughly 15h 12m 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 07h 36m.
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.
Town in Lyman County, South Dakota, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Chance Snow Showers
Slight Chance Snow Showers
Driving Route Map
The map below follows the saved road route between Spearfish and Dakota Dunes.
Turn-by-Turn Driving Directions
Step-by-step road directions between Spearfish and Dakota Dunes.
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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
338.5 mi · 5 hr 20 min
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9
Take the exit slight right
2349 ft · 57 sec
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10
Merge slight left
82.4 mi · 1 hr 20 min
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11
Take the exit slight right toward Dakota Dunes
2108 ft · 54 sec
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12
Turn right onto Dakota Dunes Boulevard
1 mi · 2 min · Dakota Dunes Boulevard
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13
Enter the roundabout and take exit 3 toward East Sawgrass Trail
843 ft · 25 sec · East Sawgrass Trail
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14
Exit the roundabout onto East Sawgrass Trail
2280 ft · 2 min · East Sawgrass Trail
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15
Turn right onto Pebble Beach Drive
130 m · 20 sec · Pebble Beach Drive
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16
Turn right onto North Royal Troon
749 ft · 39 sec · North Royal Troon
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17
Turn left onto Glen Eagle Court
74 m · 12 sec · Glen Eagle Court
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18
Continue on Glen Eagle Court
31 m · 4 sec · Glen Eagle Court
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19
Arrive at your destination
0 m · 1 sec · Glen Eagle Court
Car Route Details
A richer read on the saved driving route between Spearfish and Dakota Dunes.
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
338 mi · 05h 20m
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.
Chance Snow Showers leaving Spearfish and Slight Chance Snow Showers near Dakota Dunes.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Spearfish to Dakota Dunes?
The road trip is about 469.9 miles (756.2 km) and usually takes 07h 36m 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?
Reliance is a useful midpoint, sitting about 234.5 miles from Spearfish and 235.4 miles from Dakota Dunes.
How much longer is the road route than the straight-line distance?
The direct path is about 394.5 miles (634.9 km), while the road route adds roughly 75.4 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 $62.52 one way or $125.05 round trip. Estimated CO2 is about 147.3 kg one way.
Do you cross a time zone on this route?
Yes. There is about a 1 hour time difference between Spearfish and Dakota Dunes, so arrival and return times should be read in local time.
What should you check before leaving?
Before you leave, expect Chance Snow Showers around Spearfish and Slight Chance Snow Showers near Dakota Dunes.
Flight Path Map
This map shows the direct air route between Spearfish and Dakota Dunes. Straight-line distance: 394.48 mi (634.85 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 Dakota Dunes
Township in Union County, South Dakota
| Population | 2,540 |
| Coordinates | 42.4874900, -96.4864200 |
| Altitude | 334 |
| Country | United States |
End: Dakota Dunes (-96.48642, 42.48749)
Estimated Travel Time
Distance: 756 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 15h 39m |
| 40 mph (64.37 km/h) | 11h 44m |
| 50 mph (80.47 km/h) | 09h 23m |
| 60 mph (96.56 km/h) | 07h 49m |
| 70 mph (112.65 km/h) | 06h 42m |
| 80 mph (129 km/h) | 05h 51m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.77 | $62.52 | $125.05 |
| Mid-grade | $4.25 | $70.51 | $141.03 |
| Premium | $4.65 | $77.16 | $154.33 |
| Diesel | $5.30 | $87.94 | $175.88 |
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 18, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.