How far is Yankton, SD from Fort Thompson, SD?
The driving distance from Yankton, SD to Fort Thompson, SD is about 184.3 miles (296.6 km), with a travel time of about 03h 23m by car.
- The straight-line flight distance is about 131.6 miles (211.8 km).
- For a round trip, plan for roughly 06h 46m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 6:00 AM to 8:00 AM CDT.
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 23m.
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.
City in and county seat of Davison County, South Dakota, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Chance Rain Showers
Sunny
Driving Route Map
The map below follows the saved road route between Yankton and Fort Thompson.
Turn-by-Turn Driving Directions
Step-by-step road directions between Yankton and Fort Thompson.
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1
Start on West 4th Street
15 m · 3 sec · West 4th Street
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2
Turn left onto Broadway Avenue
4.6 mi · 6 min · Broadway Avenue
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3
Continue on US Highway 81
52.5 mi · 1 hr · US Highway 81
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4
Take the exit left
2349 ft · 57 sec
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5
Merge slight left
97.3 mi · 1 hr 31 min
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6
Take the exit slight right toward Chamberlain
2024 ft · 50 sec
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7
Turn right onto East King Street
3.1 mi · 5 min · East King Street
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8
Turn right onto South Main Street
1.3 mi · 3 min · South Main Street
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9
Continue on SD Highway 50
18.8 mi · 28 min · SD Highway 50
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10
Turn left onto SD Highway 34
4.6 mi · 7 min · SD Highway 34
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11
Keep slight left to continue on SD Highway 249
1.1 mi · 2 min · SD Highway 249
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12
Turn left onto BIA Route 4
20 m · 2 sec · BIA Route 4
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13
Arrive at your destination
0 m · 1 sec · BIA Route 4
Car Route Details
A richer read on the saved driving route between Yankton and Fort Thompson.
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 81
Merge slight left
97.3 mi · 01h 31m
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.
Chance Rain Showers leaving Yankton and Sunny near Fort Thompson.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Yankton to Fort Thompson?
The road trip is about 184.3 miles (296.6 km) and usually takes 03h 23m 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?
Mitchell is a useful midpoint, sitting about 92 miles from Yankton and 92.3 miles from Fort Thompson.
How much longer is the road route than the straight-line distance?
The direct path is about 131.6 miles (211.8 km), while the road route adds roughly 52.7 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 CDT. If you want a more comfortable same-day return, try to leave by 10:14 AM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $24.51 one way or $49.02 round trip. Estimated CO2 is about 57.8 kg one way.
What should you check before leaving?
Before you leave, expect Chance Rain Showers around Yankton and Sunny near Fort Thompson.
Flight Path Map
This map shows the direct air route between Yankton and Fort Thompson. Straight-line distance: 131.58 mi (211.76 km).
#1 Yankton
County seat of Yankton County, South Dakota, United States
| Population | 14,651 |
| Coordinates | 42.8711100, -97.3972800 |
| Altitude | 368 |
| Country | United States |
#2 Fort Thompson
Census-designated place in Buffalo County, South Dakota, United States
| Population | 1,282 |
| Coordinates | 44.0686000, -99.4378800 |
| Altitude | 439 |
| Country | United States |
End: Fort Thompson (-99.43788, 44.0686)
Estimated Travel Time
Distance: 297 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 06h 08m |
| 40 mph (64.37 km/h) | 04h 36m |
| 50 mph (80.47 km/h) | 03h 41m |
| 60 mph (96.56 km/h) | 03h 04m |
| 70 mph (112.65 km/h) | 02h 37m |
| 80 mph (129 km/h) | 02h 17m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.77 | $24.51 | $49.02 |
| Mid-grade | $4.25 | $27.64 | $55.29 |
| Premium | $4.65 | $30.25 | $60.50 |
| Diesel | $5.30 | $34.48 | $68.95 |
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.