How far is Rapid City, SD from Webster, SD?
The driving distance from Rapid City, SD to Webster, SD is about 416.9 miles (670.9 km), with a travel time of about 07h 03m by car.
- The straight-line flight distance is about 293.4 miles (472.2 km).
- For a round trip, plan for roughly 14h 07m 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 07h 03m.
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 Brule County, South Dakota, United States
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 Webster.
Turn-by-Turn Driving Directions
Step-by-step road directions between Rapid City and Webster.
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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
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4
Keep slight right to continue on I 90 East: Sioux Falls
1661 ft · 29 sec
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5
Continue straight
292.1 mi · 4 hr 36 min
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6
Take the exit slight right toward SD 25: Emery, Farmer
1688 ft · 48 sec
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7
Turn left onto SD Highway 25
23.8 mi · 28 min · SD Highway 25
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8
Turn right onto SD Highway 34
6 mi · 7 min · SD Highway 34
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9
Turn left onto SD Highway 25
60 mi · 1 hr 11 min · SD Highway 25
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10
At the end of the road, turn right onto US Highway 212
1.4 km · 1 min · US Highway 212
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11
Turn left onto SD Highway 25
31.2 mi · 36 min · SD Highway 25
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12
Continue on South Main Street
2840 ft · 39 sec · South Main Street
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13
Turn right onto East 7th Avenue
4 m · 1 sec · East 7th Avenue
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14
Arrive at your destination
0 m · 1 sec · East 7th Avenue
Car Route Details
A richer read on the saved driving route between Rapid City and Webster.
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
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.
Rain Showers Likely leaving Rapid City and Chance Rain Showers near Webster.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Rapid City to Webster?
The road trip is about 416.9 miles (670.9 km) and usually takes 07h 03m 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?
Chamberlain is a useful midpoint, sitting about 208.1 miles from Rapid City and 208.8 miles from Webster.
How much longer is the road route than the straight-line distance?
The direct path is about 293.4 miles (472.2 km), while the road route adds roughly 123.5 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 $55.47 one way or $110.94 round trip. Estimated CO2 is about 130.7 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 Webster, 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 Webster.
Flight Path Map
This map shows the direct air route between Rapid City and Webster. Straight-line distance: 293.4 mi (472.18 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 Webster
City in and county seat of Day County, South Dakota, United States
| Population | 1,694 |
| Coordinates | 45.3321800, -97.5200900 |
| Altitude | 566 |
| Country | United States |
End: Webster (-97.52009, 45.33218)
Estimated Travel Time
Distance: 671 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 13h 53m |
| 40 mph (64.37 km/h) | 10h 25m |
| 50 mph (80.47 km/h) | 08h 20m |
| 60 mph (96.56 km/h) | 06h 56m |
| 70 mph (112.65 km/h) | 05h 57m |
| 80 mph (129 km/h) | 05h 12m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.77 | $55.47 | $110.94 |
| Mid-grade | $4.25 | $62.56 | $125.12 |
| Premium | $4.65 | $68.46 | $136.92 |
| Diesel | $5.30 | $78.02 | $156.04 |
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.