How far is Spearfish, SD from North Sioux City, SD?
The driving distance from Spearfish, SD to North Sioux City, SD is about 467.6 miles (752.6 km), with a travel time of about 07h 31m by car.
- The straight-line flight distance is about 393.6 miles (633.4 km).
- For a round trip, plan for roughly 15h 02m 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 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.
Town in Lyman County, South Dakota, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Mostly Clear
Sunny
Driving Route Map
The map below follows the saved road route between Spearfish and North Sioux City.
Turn-by-Turn Driving Directions
Step-by-step road directions between Spearfish and North Sioux City.
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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
81 mi · 1 hr 19 min
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11
Take the exit slight right toward North Sioux City
1346 ft · 39 sec
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12
Turn left onto River Drive
1.6 km · 2 min · River Drive
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13
Turn left onto Military Road
829 ft · 23 sec · Military Road
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14
Arrive at your destination
0 m · 1 sec · Military Road
Car Route Details
A richer read on the saved driving route between Spearfish and North Sioux City.
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.
Mostly Clear leaving Spearfish and Sunny near North Sioux City.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Spearfish to North Sioux City?
The road trip is about 467.6 miles (752.6 km) and usually takes 07h 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?
Reliance is a useful midpoint, sitting about 233.4 miles from Spearfish and 234.3 miles from North Sioux City.
How much longer is the road route than the straight-line distance?
The direct path is about 393.6 miles (633.4 km), while the road route adds roughly 74 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 $62.22 one way or $124.44 round trip. Estimated CO2 is about 146.6 kg one way.
Do you cross a time zone on this route?
Yes. There is about a 1 hour time difference between Spearfish and North Sioux City, so arrival and return times should be read in local time.
What should you check before leaving?
Before you leave, expect Mostly Clear around Spearfish and Sunny near North Sioux City.
Flight Path Map
This map shows the direct air route between Spearfish and North Sioux City. Straight-line distance: 393.57 mi (633.39 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 North Sioux City
City in Union County South Dakota, United States
| Population | 2,928 |
| Coordinates | 42.5272200, -96.4830900 |
| Altitude | 337 |
| Country | United States |
End: North Sioux City (-96.48309, 42.52722)
Estimated Travel Time
Distance: 753 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 15h 34m |
| 40 mph (64.37 km/h) | 11h 41m |
| 50 mph (80.47 km/h) | 09h 21m |
| 60 mph (96.56 km/h) | 07h 47m |
| 70 mph (112.65 km/h) | 06h 40m |
| 80 mph (129 km/h) | 05h 50m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.77 | $62.22 | $124.44 |
| Mid-grade | $4.25 | $70.17 | $140.35 |
| Premium | $4.65 | $76.79 | $153.58 |
| Diesel | $5.30 | $87.52 | $175.03 |
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 16, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.