How far is Spearfish, SD from Lemmon, SD?
The driving distance from Spearfish, SD to Lemmon, SD is about 194.6 miles (313.2 km), with a travel time of about 03h 48m by car.
- The straight-line flight distance is about 129.9 miles (209.1 km).
- For a round trip, plan for roughly 07h 37m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 6:00 AM to 8:00 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 03h 48m.
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.
Town in and county seat of Harding County, South Dakota, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Partly Sunny then Slight Chance Showers And Thunderstorms
Partly Sunny then Slight Chance Showers And Thunderstorms
Driving Route Map
The map below follows the saved road route between Spearfish and Lemmon.
Turn-by-Turn Driving Directions
Step-by-step road directions between Spearfish and Lemmon.
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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
1 km · 2 min · East Jackson Boulevard
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4
Take the ramp left toward I 90 West, US 85 North
1877 ft · 46 sec
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5
Merge slight left
1.5 mi · 1 min
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6
Take the exit slight right toward US 85 North: US 85 North, North Avenue, Belle Fourche
1547 ft · 38 sec
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7
Keep slight left
27 m · 4 sec
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8
Turn right onto US Highway 85
8.9 mi · 11 min · US Highway 85
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9
Continue on 5th Avenue
2.3 mi · 5 min · 5th Avenue
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10
Continue on US Highway 85
54.1 mi · 1 hr 2 min · US Highway 85
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11
Continue on Theodore Roosevelt Expressway
60.5 mi · 1 hr 10 min · Theodore Roosevelt Expressway
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12
Continue on Theodore Roosevelt Expressway
23 mi · 26 min · Theodore Roosevelt Expressway
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13
Continue straight
18.9 mi · 21 min
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14
Continue straight
23.8 mi · 27 min
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15
Turn left onto Main Avenue
2146 ft · 59 sec · Main Avenue
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16
Arrive at your destination
0 m · 1 sec · Main Avenue
Car Route Details
A richer read on the saved driving route between Spearfish and Lemmon.
Highway-focused drive
Most of the mileage stays on named highways, so the important moments are ramps, exits, merges, and the final local approach.
Theodore Roosevelt Expressway
Continue on Theodore Roosevelt Expressway
60.5 mi · 01h 10m
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.
Partly Sunny then Slight Chance Showers And Thunderstorms leaving Spearfish and Partly Sunny then Slight Chance Showers And Thunderstorms near Lemmon.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Spearfish to Lemmon?
The road trip is about 194.6 miles (313.2 km) and usually takes 03h 48m 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?
Buffalo is a useful midpoint, sitting about 97.2 miles from Spearfish and 97.4 miles from Lemmon.
How much longer is the road route than the straight-line distance?
The direct path is about 129.9 miles (209.1 km), while the road route adds roughly 64.7 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 MDT. If you want a more comfortable same-day return, try to leave by 9:22 AM MDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $25.91 one way or $51.81 round trip. Estimated CO2 is about 61.1 kg one way.
What should you check before leaving?
Before you leave, expect Partly Sunny then Slight Chance Showers And Thunderstorms around Spearfish and Partly Sunny then Slight Chance Showers And Thunderstorms near Lemmon.
Flight Path Map
This map shows the direct air route between Spearfish and Lemmon. Straight-line distance: 129.93 mi (209.1 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 Lemmon
City in South Dakota, United States of America
| Population | 1,160 |
| Coordinates | 45.9408300, -102.1593200 |
| Altitude | 783 |
| Country | United States |
End: Lemmon (-102.15932, 45.94083)
Estimated Travel Time
Distance: 313 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 06h 29m |
| 40 mph (64.37 km/h) | 04h 51m |
| 50 mph (80.47 km/h) | 03h 53m |
| 60 mph (96.56 km/h) | 03h 14m |
| 70 mph (112.65 km/h) | 02h 46m |
| 80 mph (129 km/h) | 02h 25m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.77 | $25.91 | $51.81 |
| Mid-grade | $4.25 | $29.22 | $58.44 |
| Premium | $4.65 | $31.97 | $63.95 |
| Diesel | $5.30 | $36.44 | $72.88 |
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 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.