How far is Porcupine, SD from Yankton, SD?
The driving distance from Porcupine, SD to Yankton, SD is about 286.1 miles (460.5 km), with a travel time of about 05h 14m by car.
- The straight-line flight distance is about 250.4 miles (402.9 km).
- For a round trip, plan for roughly 10h 28m 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 14m.
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 Lyman County, South Dakota, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Rain Showers
Showers And Thunderstorms
Driving Route Map
The map below follows the saved road route between Porcupine and Yankton.
Turn-by-Turn Driving Directions
Step-by-step road directions between Porcupine and Yankton.
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1
Start on Eagle Drive
9 m · 2 sec · Eagle Drive
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2
Turn right onto Main Street
38 m · 11 sec · Main Street
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3
Turn left onto Big Foot Trail
14.6 mi · 35 min · Big Foot Trail
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4
At the end of the road, turn left
48.1 mi · 57 min
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5
Turn left onto State Highway 73
44.6 mi · 52 min · State Highway 73
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6
Continue on SD Highway 73
1 mi · 2 min · SD Highway 73
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7
Take the ramp right toward I 90 East
2008 ft · 49 sec
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8
Merge slight left
213 mi · 3 hr 20 min
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9
Take the exit slight right toward US 81: Salem, Yankton
1983 ft · 50 sec
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10
Turn right onto US Highway 81
35.8 mi · 41 min · US Highway 81
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11
Continue on 291st Street
1.3 km · 55 sec · 291st Street
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12
Continue on US Highway 81
15.6 mi · 18 min · US Highway 81
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13
Continue on Broadway Avenue
4.6 mi · 5 min · Broadway Avenue
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14
Turn right onto West 4th Street
15 m · 1 sec · West 4th Street
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15
Arrive at your destination
0 m · 1 sec · West 4th Street
Car Route Details
A richer read on the saved driving route between Porcupine and Yankton.
Highway-focused drive
Most of the mileage stays on named highways, so the important moments are ramps, exits, merges, and the final local approach.
I 90 East
Merge slight left
213 mi · 03h 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.
Rain Showers leaving Porcupine and Showers And Thunderstorms near Yankton.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Porcupine to Yankton?
The road trip is about 286.1 miles (460.5 km) and usually takes 05h 14m 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?
Kennebec is a useful midpoint, sitting about 189.2 miles from Porcupine and 96.9 miles from Yankton.
How much longer is the road route than the straight-line distance?
The direct path is about 250.4 miles (402.9 km), while the road route adds roughly 35.7 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 6:32 AM MDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $42.75 one way or $85.51 round trip. Estimated CO2 is about 89.8 kg one way.
Do you cross a time zone on this route?
Yes. There is about a 1 hour time difference between Porcupine and Yankton, so arrival and return times should be read in local time.
What should you check before leaving?
Before you leave, expect Rain Showers around Porcupine and Showers And Thunderstorms near Yankton.
Flight Path Map
This map shows the direct air route between Porcupine and Yankton. Straight-line distance: 250.34 mi (402.89 km).
#1 Porcupine
Situated on the Pine Ridge Indian Reservation in southwestern South Dakota, this census-designated place lies within Oglala Lakota County at an elevation of 3,192 feet.
| Population | 0 |
| Coordinates | 43.2397100, -102.3309900 |
| Altitude | 973 |
| Country | United States |
#2 Yankton
County seat of Yankton County, South Dakota, United States
| Population | 14,651 |
| Coordinates | 42.8711100, -97.3972800 |
| Altitude | 368 |
| Country | United States |
End: West 4th Street (-97.397278, 42.871173)
Estimated Travel Time
Distance: 460 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 09h 32m |
| 40 mph (64.37 km/h) | 07h 09m |
| 50 mph (80.47 km/h) | 05h 43m |
| 60 mph (96.56 km/h) | 04h 46m |
| 70 mph (112.65 km/h) | 04h 05m |
| 80 mph (129 km/h) | 03h 34m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $4.23 | $42.75 | $85.51 |
| Mid-grade | $4.46 | $45.04 | $90.07 |
| Premium | $5.05 | $51.02 | $102.03 |
| Diesel | $6.01 | $60.68 | $121.36 |
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 · Oct 15, 2026