How far is Spearfish, SD from Tea, SD?
The driving distance from Spearfish, SD to Tea, SD is about 392.4 miles (631.5 km), with a travel time of about 05h 27m by car.
- The straight-line flight distance is about 356.5 miles (573.8 km).
- For a round trip, plan for roughly 10h 55m 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 05h 27m.
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.
Census-designated place in Lyman County, South Dakota, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Widespread Frost then Mostly Sunny
Driving Route Map
The map below follows the saved road route between Spearfish and Tea.
Turn-by-Turn Driving Directions
Step-by-step road directions between Spearfish and Tea.
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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
10.2 mi · 12 min
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11
Take the exit slight right toward CR 106: Tea
1237 ft · 30 sec
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12
Keep slight right
91 m · 7 sec
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13
Turn straight onto East Gateway Boulevard
1.4 mi · 2 min · East Gateway Boulevard
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14
Turn left onto North Heritage Parkway
1 mi · 2 min · North Heritage Parkway
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15
Turn right onto East 1st Street
2552 ft · 51 sec · East 1st Street
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16
Arrive at your destination
0 m · 1 sec · East 1st Street
Car Route Details
A richer read on the saved driving route between Spearfish and Tea.
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.
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.
Sunny leaving Spearfish and Widespread Frost then Mostly Sunny near Tea.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Spearfish to Tea?
The road trip is about 392.4 miles (631.5 km) and usually takes 05h 27m 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?
Vivian is a useful midpoint, sitting about 198.8 miles from Spearfish and 193.6 miles from Tea.
How much longer is the road route than the straight-line distance?
The direct path is about 356.5 miles (573.8 km), while the road route adds roughly 35.9 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 6:04 AM MDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $52.23 one way or $104.46 round trip. Estimated CO2 is about 123.1 kg one way.
Do you cross a time zone on this route?
Yes. There is about a 1 hour time difference between Spearfish and Tea, so arrival and return times should be read in local time.
What should you check before leaving?
Before you leave, expect Sunny around Spearfish and Widespread Frost then Mostly Sunny near Tea.
Flight Path Map
This map shows the direct air route between Spearfish and Tea. Straight-line distance: 356.52 mi (573.76 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 Tea
City in South Dakota, United States of America
| Population | 6,405 |
| Coordinates | 43.4463700, -96.8358800 |
| Altitude | 454 |
| Country | United States |
End: East 1st Street (-96.83588, 43.446483)
Estimated Travel Time
Distance: 632 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 13h 04m |
| 40 mph (64.37 km/h) | 09h 48m |
| 50 mph (80.47 km/h) | 07h 50m |
| 60 mph (96.56 km/h) | 06h 32m |
| 70 mph (112.65 km/h) | 05h 36m |
| 80 mph (129 km/h) | 04h 53m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.77 | $52.23 | $104.46 |
| Mid-grade | $4.25 | $58.90 | $117.81 |
| Premium | $4.65 | $64.46 | $128.92 |
| Diesel | $5.30 | $73.46 | $146.92 |
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 · May 02, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.