How far is Lemmon, SD from Spearfish, SD?
The driving distance from Lemmon, SD to Spearfish, SD is about 179.1 miles (288.2 km), with a travel time of about 02h 58m by car.
- The straight-line flight distance is about 129.9 miles (209.1 km).
- For a round trip, plan for roughly 05h 56m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 8:00 AM to 10:00 AM MDT.
Reverse, save, or send this route
This route works well as a day trip with time at the destination. Copy the route link, send it to another device, or print a clean version before you head out.
This route works well as a day trip with time at the destination.
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 02h 58m.
A morning start gives you useful time at the destination and keeps the return out of the late evening.
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 Lemmon and Spearfish.
Turn-by-Turn Driving Directions
Step-by-step road directions between Lemmon and Spearfish.
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1
Start on Main Avenue
2146 ft · 1 min · Main Avenue
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2
Turn right onto 10th Street West
17.6 mi · 20 min · 10th Street West
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3
Continue straight
25 mi · 28 min
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4
Continue straight
23 mi · 26 min
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5
Continue on Theodore Roosevelt Expressway
16.5 mi · 19 min · Theodore Roosevelt Expressway
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6
Continue on US Highway 85
98.1 mi · 1 hr 53 min · US Highway 85
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7
Continue on North 5th Avenue
2.3 mi · 5 min · North 5th Avenue
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8
Continue on US Highway 85
9.1 mi · 11 min · US Highway 85
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9
Continue on North Avenue
1.7 mi · 4 min · North Avenue
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10
Continue on North Main Street
1484 ft · 56 sec · North Main Street
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11
Arrive at your destination
0 m · 1 sec · North Main Street
Car Route Details
A richer read on the saved driving route between Lemmon and Spearfish.
Highway-focused drive
Most of the mileage stays on named highways, so the important moments are ramps, exits, merges, and the final local approach.
US Highway 85
Continue on US Highway 85
98.1 mi · 01h 53m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
A comfortable day-trip route
This route works well as a day trip. You can leave in the morning, spend meaningful time at the destination, and still return the same day.
Partly Sunny then Slight Chance Showers And Thunderstorms leaving Lemmon 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 Lemmon to Spearfish?
The road trip is about 179.1 miles (288.2 km) and usually takes 02h 58m in normal driving conditions.
Is this a same-day trip or an overnight route?
This route works well as a day trip. You can leave in the morning, spend meaningful time at the destination, and still return the same day.
What is the halfway point on this route?
Buffalo is a useful midpoint, sitting about 96.9 miles from Lemmon and 82.1 miles from Spearfish.
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 49.2 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 8:00 AM to 10:00 AM MDT. If you want a more comfortable same-day return, try to leave by 12:34 PM MDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $23.83 one way or $47.67 round trip. Estimated CO2 is about 56.2 kg one way.
What should you check before leaving?
Before you leave, expect Partly Sunny then Slight Chance Showers And Thunderstorms around Lemmon and Partly Sunny then Slight Chance Showers And Thunderstorms near Spearfish.
Flight Path Map
This map shows the direct air route between Lemmon and Spearfish. Straight-line distance: 129.93 mi (209.1 km).
#1 Lemmon
City in South Dakota, United States of America
| Population | 1,160 |
| Coordinates | 45.9408300, -102.1593200 |
| Altitude | 783 |
| 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: 288 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 05h 58m |
| 40 mph (64.37 km/h) | 04h 28m |
| 50 mph (80.47 km/h) | 03h 34m |
| 60 mph (96.56 km/h) | 02h 59m |
| 70 mph (112.65 km/h) | 02h 33m |
| 80 mph (129 km/h) | 02h 14m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.77 | $23.83 | $47.67 |
| Mid-grade | $4.25 | $26.88 | $53.76 |
| Premium | $4.65 | $29.41 | $58.83 |
| Diesel | $5.30 | $33.52 | $67.04 |
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.