How far is Belle Fourche, SD from Watertown, SD?
The driving distance from Belle Fourche, SD to Watertown, SD is about 363.4 miles (584.9 km), with a travel time of about 06h 23m by car.
- The straight-line flight distance is about 330.6 miles (532.1 km).
- For a round trip, plan for roughly 12h 47m 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 06h 23m.
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.
City in and county seat of Lyman County, South Dakota, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Sunny
Sunny
Driving Route Map
The map below follows the saved road route between Belle Fourche and Watertown.
Turn-by-Turn Driving Directions
Step-by-step road directions between Belle Fourche and Watertown.
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1
Start on 6th Avenue
8 m · 7 sec · 6th Avenue
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2
Turn left onto State Street
117 m · 21 sec · State Street
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3
Turn left onto 5th Avenue
1.7 mi · 4 min · 5th Avenue
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4
Turn left onto SD Highway 34
17.5 mi · 21 min · SD Highway 34
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5
Take the ramp left
10.7 mi · 11 min
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6
Continue straight
23.6 mi · 24 min
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7
Continue straight
292.1 mi · 4 hr 36 min
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8
Take the exit slight right toward SD 25: Emery, Farmer
1688 ft · 48 sec
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9
Turn left onto SD Highway 25
23.8 mi · 28 min · SD Highway 25
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10
Turn right onto SD Highway 34
6 mi · 7 min · SD Highway 34
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11
Turn left onto SD Highway 25
60 mi · 1 hr 11 min · SD Highway 25
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12
At the end of the road, turn right onto US Highway 212
3.9 mi · 6 min · US Highway 212
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13
Continue on 4th Street
1 mi · 2 min · 4th Street
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14
Continue on US Highway 212
10.6 mi · 12 min · US Highway 212
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15
Continue on 9th Avenue Southwest
6.4 mi · 9 min · 9th Avenue Southwest
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16
Turn left onto South Broadway
1.1 km · 2 min · South Broadway
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17
Arrive at your destination
0 m · 1 sec · South Broadway
Car Route Details
A richer read on the saved driving route between Belle Fourche and Watertown.
Long-distance drive
This route is long enough that fuel, rest stops, weather, and timing matter more than any single maneuver.
SD Highway 34
Continue straight
292 mi · 04h 36m
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.
Sunny leaving Belle Fourche and Sunny near Watertown.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Belle Fourche to Watertown?
The road trip is about 363.4 miles (584.9 km) and usually takes 06h 23m 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?
Kennebec is a useful midpoint, sitting about 228.8 miles from Belle Fourche and 134.7 miles from Watertown.
How much longer is the road route than the straight-line distance?
The direct path is about 330.6 miles (532.1 km), while the road route adds roughly 32.8 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 $48.38 one way or $96.76 round trip. Estimated CO2 is about 114 kg one way.
Do you cross a time zone on this route?
Yes. There is about a 1 hour time difference between Belle Fourche and Watertown, so arrival and return times should be read in local time.
What should you check before leaving?
Before you leave, expect Sunny around Belle Fourche and Sunny near Watertown.
Flight Path Map
This map shows the direct air route between Belle Fourche and Watertown. Straight-line distance: 330.66 mi (532.15 km).
#1 Belle Fourche
City in and county seat of Butte County, South Dakota, United States
| Population | 5,742 |
| Coordinates | 44.6713700, -103.8521500 |
| Altitude | 921 |
| Country | United States |
#2 Watertown
City in and county seat of Codington County, South Dakota, United States
| Population | 22,303 |
| Coordinates | 44.8994100, -97.1150700 |
| Altitude | 528 |
| Country | United States |
End: South Broadway (-97.115008, 44.899398)
Estimated Travel Time
Distance: 585 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 12h 06m |
| 40 mph (64.37 km/h) | 09h 05m |
| 50 mph (80.47 km/h) | 07h 16m |
| 60 mph (96.56 km/h) | 06h 03m |
| 70 mph (112.65 km/h) | 05h 11m |
| 80 mph (129 km/h) | 04h 32m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.77 | $48.38 | $96.76 |
| Mid-grade | $4.25 | $54.57 | $109.13 |
| Premium | $4.65 | $59.71 | $119.42 |
| Diesel | $5.30 | $68.05 | $136.10 |
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 19, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.