How far is Rapid City, SD from Sioux Falls, SD?
The driving distance from Rapid City, SD to Sioux Falls, SD is about 348.9 miles (561.5 km), with a travel time of about 04h 44m by car.
- The straight-line flight distance is about 327.6 miles (527.2 km).
- For a round trip, plan for roughly 09h 29m 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 04h 44m.
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.
Human settlement in Lyman County, South Dakota, United States of America
Route Weather Snapshot
Check the forecast at both ends before you head out.
Rain Showers Likely
Chance Rain Showers
Driving Route Map
The map below follows the saved road route between Rapid City and Sioux Falls.
Turn-by-Turn Driving Directions
Step-by-step road directions between Rapid City and Sioux Falls.
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1
Start on Mount Rushmore Road
1223 ft · 48 sec · Mount Rushmore Road
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2
Turn left onto Omaha Street
1094 ft · 38 sec · Omaha Street
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3
Turn right
1.2 mi · 2 min
-
4
Keep slight right to continue on I 90 East: Sioux Falls
1661 ft · 28 sec
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5
Continue straight
342.5 mi · 5 hr 24 min
-
6
Take the exit slight right toward I 229 South
2551 ft · 33 sec
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7
Merge slight left
3.6 mi · 4 min
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8
Take the exit slight right toward 10th Street, Downtown
1309 ft · 32 sec
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9
Keep slight right to continue on SD 42: Downtown, Washington Pavilion
610 ft · 21 sec
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10
Turn right onto South Lowell Avenue
633 ft · 23 sec · South Lowell Avenue
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11
Turn left onto East 8th Street
992 ft · 29 sec · East 8th Street
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12
Turn right onto North Chicago Avenue
540 ft · 24 sec · North Chicago Avenue
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13
Arrive at your destination
0 m · 1 sec · North Chicago Avenue
Car Route Details
A richer read on the saved driving route between Rapid City and Sioux Falls.
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
343 mi · 05h 24m
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 Likely leaving Rapid City and Chance Rain Showers near Sioux Falls.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Rapid City to Sioux Falls?
The road trip is about 348.9 miles (561.5 km) and usually takes 04h 44m 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?
Presho is a useful midpoint, sitting about 174.2 miles from Rapid City and 174.7 miles from Sioux Falls.
How much longer is the road route than the straight-line distance?
The direct path is about 327.6 miles (527.2 km), while the road route adds roughly 21.3 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 7:30 AM MDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $46.42 one way or $92.84 round trip. Estimated CO2 is about 109.4 kg one way.
Do you cross a time zone on this route?
Yes. There is about a 1 hour time difference between Rapid City and Sioux Falls, so arrival and return times should be read in local time.
What should you check before leaving?
Before you leave, expect Rain Showers Likely around Rapid City and Chance Rain Showers near Sioux Falls.
Flight Path Map
This map shows the direct air route between Rapid City and Sioux Falls. Straight-line distance: 327.56 mi (527.16 km).
#1 Rapid City
The second most populous city in South Dakota.
| Population | 77,503 |
| Coordinates | 44.0805400, -103.2310100 |
| Altitude | 988 |
| Country | United States |
#2 Sioux Falls
The largest city in South Dakota.
| Population | 157,584 |
| Coordinates | 43.5499700, -96.7003300 |
| Altitude | 448 |
| Country | United States |
End: North Chicago Avenue (-96.700171, 43.549971)
Estimated Travel Time
Distance: 561 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 11h 37m |
| 40 mph (64.37 km/h) | 08h 43m |
| 50 mph (80.47 km/h) | 06h 58m |
| 60 mph (96.56 km/h) | 05h 48m |
| 70 mph (112.65 km/h) | 04h 59m |
| 80 mph (129 km/h) | 04h 21m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.77 | $46.42 | $92.84 |
| Mid-grade | $4.25 | $52.35 | $104.71 |
| Premium | $4.65 | $57.29 | $114.58 |
| Diesel | $5.30 | $65.29 | $130.58 |
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.