Origin
Rapid City, SD
Afternoon in Rapid City on Wednesday
Local time
1:02 PM
MDT
Current temp
78°F
Unavailable
Live forecast
Trip from Rapid City, SD to Milbank, SD
Data updated 0 seconds ago
Drive Time
7h 39m
Distance
458.5 mi
738 km
Drive Score
8/10
Great drive
Same Day?
Yes, doable
Fuel Cost
$72
one way
EV Charging
Loading...
station data
Best Time to Leave
4 AM
7h 29m
★
6 AM
7h 39m
8 AM
7h 59m
10 AM
7h 46m
12 PM
7h 44m
3 PM
7h 47m
5 PM
7h 58m
8 PM
7h 33m
Estimated drive times based on typical traffic patterns. Actual times may vary with weather, construction, and real-time conditions.
Rapid City, SD
Wikimedia Commons
Milbank, SD
Wikimedia Commons
Trip Overview
This 458.5-mile drive from Rapid City, South Dakota, to Milbank, South Dakota, is a substantial undertaking, estimated to take about 7 hours and 39 minutes of pure driving time. Primarily utilizing I-90 and I-29, with a stretch on SD Highway 15, this route is 99% highway, making it a very efficient way to cover ground across the Great Plains. With a projected fuel cost of $72 and only two recommended stops, this journey is designed for efficient travel and can realistically be completed in a single, albeit long, day. Consider this a straightforward, highway-focused trip designed for getting from point A to point B.
Trip Pace
Same-day drive is realistic
A same-day return is possible, but it will make for a full day on the road.
Break Rhythm
2 planned breaks
Plan on a short reset every 3 to 4 hours to stay fresh behind the wheel.
Midpoint
229.2 miles from Rapid City, SD
A natural place for your longest stop of the day , about 3h 38m into the drive .
Loading map...
Drive Character
Expect a largely uninterrupted highway experience on this route, as 99% of it is on major roads. The bulk of your journey, a continuous 338.8 miles, will be on I-90, offering a consistent pace. As you transition to I-29 and then SD Highway 15, the character remains predominantly highway-focused, minimizing deviations and maximizing forward momentum. This isn't a route for leisurely sightseeing; it's built for covering distance with minimal fuss, allowing you to maintain a steady speed for extended periods.
Most of the miles stay on highways, which makes pacing and fuel planning easier than turn-by-turn city driving.
There are about 17 navigation steps in the underlying route data, so the final approach matters more than the middle miles.
I 90 is the longest continuous segment at about 338.8 miles.
How Hard Is This Drive?
This is a straightforward highway drive that stays mostly on I 90 and I 29. There are only a few real navigation decisions along the way. The trickiest moment comes around 0.4 miles in near I 190; US 16.
Route Complexity
4/10
Easy - simple navigation with a manageable amount of wheel time
The route itself is not hard, but at 7h 39m, endurance matters. Plan breaks every 2-3 hours. The 10 decision points are all manageable with basic attention.
Where does it get tricky?
The main spots that need attention: at 0.4 miles (I 190; US 16): Navigation decision point; at 1.7 miles (I 190): Highway fork - watch signs carefully; at 340.8 miles: Exit ramp - move to the correct lane early.
Critical Maneuvers
5 of 10 key pointsThese are the spots where you need to pay the most attention. Preview them before you drive.
4
0.4 mi into trip
|
~1m in
|
I 190; US 16
Turn right onto I 190; US 16
Navigation decision point
6
1.7 mi into trip
|
~3m in
|
I 190
Keep slight right at fork onto I 190 toward I 90 East: Sioux Falls
Highway fork - watch signs carefully
Exit 1B
Toward I 90 East: Sioux Falls
4
340.8 mi into trip
|
~5h 23m in
Take the exit toward I 29: Fargo
Exit ramp - move to the correct lane early
Toward I 29: Fargo
5
407.5 mi into trip
|
~6h 26m in
Take the exit toward North SD 15, SD 28: Toronto, Estelline
Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one
Toward North SD 15, SD 28: Toronto, Estelline
4
433.7 mi into trip
|
~7h 2m in
|
US 212; SD 15 / US Highway 212
At end of road, turn right onto US 212; SD 15 / US Highway 212
Navigation decision point
Towns Mentioned on Route Signs
Based on OSRM destination-sign hints, not a full list of every settlement the road passes.
On the drive from Rapid City, SD to Milbank, SD, road signs begin pointing toward Estelline along the way.
Estelline
407.5 mi in
|
~6h 26m
Main Roads
| Road | Distance | Duration |
|---|---|---|
| I 90 | 338.8 mi | 5h 20m |
| I 29 | 66.5 mi | 1h 2m |
| SD Highway 15 | 39.7 mi | 55m |
| US Highway 212 | 4.8 mi | 7m |
| SD Highway 28 | 3.9 mi | 5m |
| I 190 | 1.5 mi | 2m |
| 3rd Avenue South | 1.1 mi | 1m |
| South Dakota Street | 1 mi | 1m |
Longest stretch:
I 90
— 338.8 mi, about 5h 20m
Turn-by-Turn Driving Directions
Step-by-step road directions between Rapid City, SD and Milbank, SD.
1
Start on US 16
0.2 mi
·
47 sec
·
Mount Rushmore Road
2
Turn left onto US 16; SD 44
0.2 mi
·
38 sec
·
Omaha Street
3
Turn right onto I 190; US 16
1.2 mi
·
1 min
·
I 190; US 16
4
Keep slight right at fork onto I 190
0.3 mi
·
29 sec
·
I 190
Exit 1B
Toward I 90 East: Sioux Falls
5
Continue on I 90; US 14; US 16 Truck; SD 79
339 mi
·
5 hr 20 min
·
I 90; US 14; US 16 Truck; SD 79
6
Take the exit
0.2 mi
·
27 sec
Toward I 29: Fargo
7
Merge onto I 29
66 mi
·
1 hr 2 min
·
I 29
8
Take the exit
0.3 mi
·
32 sec
Toward North SD 15, SD 28: Toronto, Estelline
9
Turn right onto SD 15; SD 28
3.9 mi
·
5 min
·
SD Highway 28
10
Turn left onto SD 15
12 mi
·
13 min
·
SD Highway 15
11
Continue on SD 15
1.1 mi
·
1 min
·
3rd Avenue South
12
Continue on SD 15
9.1 mi
·
13 min
·
SD Highway 15
13
At end of road, turn right onto US 212; SD 15
4.8 mi
·
7 min
·
US Highway 212
14
Turn left onto SD 15
19 mi
·
27 min
·
SD Highway 15
15
Continue on South Dakota Street
1.0 mi
·
1 min
·
South Dakota Street
16
Turn right onto US 12
0.3 mi
·
19 sec
·
West 4th Avenue
17
Arrive at destination
US 12
Trip Plan
Given the 7-hour-plus driving time, starting your journey from Rapid City early in the morning is highly recommended to ensure you arrive in Milbank with daylight to spare. While the route suggests only two stops, plan for additional brief breaks to stay alert, especially during the longest stretch of 338.8 miles on I-90. The $72 fuel estimate is a good baseline, but monitor your gauge, particularly before heading into less populated stretches. Keep in mind that the efficiency of this highway-focused drive means you won't have many opportunities for spontaneous stops, so having snacks and drinks ready is a smart move.
Morning Departure
Start early — leave by 6-7 AM to arrive at a reasonable hour.
Evening Departure
This is a long drive — plan for a morning departure or consider splitting it into two days.
You can normally do this drive in one day.
Plan roughly 2 meaningful breaks for fuel, food, and rest.
The halfway point lands around 229.2 miles from Rapid City, SD, or about 3h 38m into the drive.
The longest continuous stretch on this route runs about 338.8 miles.
This is a comfortable same-day trip.
Departure
Before you leave
Start with fuel, water, and navigation already sorted so the first hour feels easy.
First stop
Around 101 miles or 1h 37m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 229.2 miles or 3h 38m in
This is the best place for your longest stop, a real meal, and a full fuel check.
Final approach
Final hour starts around 6h 18m
Traffic, exits, and arrival timing usually matter more near Milbank, SD than in the middle of the route.
Before You Leave
+
Open the route before leaving Rapid City, SD so your first major turns are already loaded.
+
Leave with enough water and a charging cable within reach, not packed away.
+
Check your fuel range against the first long segment, especially if you are starting outside city service areas.
+
Pick one backup stop option before the midpoint in case traffic changes your pacing.
Day 1
Settle into the route from Rapid City, SD
This is one driving day of about 458.5 miles and 7h 39m.
Your first comfortable stop window is around 101 miles from Rapid City, SD.
This route can stay practical as a one-day drive if traffic stays reasonable.
Plan about 2 real breaks rather than only quick fuel stops.
The longest stretch is on I 90 for about 338.8 miles.
Where to Stop
Rest stops, refuel points, and overnight suggestions along this route.
Halfway Point
Midpoint
About 229.2 mi from Rapid City, SD · 3h 38m into the drive
Mid-route town
Meal stop
229 mi into the route
Best for: Lunch, fuel, and a longer reset
This sits close to the middle of the route, so it works well for the longest stop of the day.
Pacing Suggestions
Fuel and coffee
A short stop after about 101 miles helps settle the day before fatigue starts building.
Meal break
The midpoint is around 229.2 miles from Rapid City, SD, which is a good place for a longer meal and fuel stop.
Before the longest stretch
Fuel checkTop up before I 90 if your tank is already low. That segment runs about 338.8 miles.
Arriving in Milbank, SD
The final approach into Milbank, SD usually feels slower than the middle of the drive, so avoid planning your tightest schedule at the very end.
Try to arrive with enough fuel left to skip an immediate station stop unless you already know the area around Milbank, SD.
After long uninterrupted mileage, take five minutes before the last urban segment to reset and refocus on exits, merges, and city traffic.
These stop ideas are pacing suggestions — the exact town or exit can change with traffic, hotel plans, and fuel range.
Fuel & Cost
Regular Gas
$71.68 one way
$143.36 round trip
$3.97/gal
25.4 MPG avg
160 kg CO2
| Fuel Type | $/gal | One Way | Round Trip |
|---|---|---|---|
| midgrade | $4.36 | $78.70 | $157.41 |
| premium | $4.89 | $88.23 | $176.47 |
| diesel | $5.61 | $101.23 | $202.46 |
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$72
Meals
$25–$50
Total
$97–$122
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 160.4 kg one way. Prices: EIA weekly data, 2026-04-13.
Driving Electric?
About $48 in charging · 1 stop · 66% less CO2
| Vehicle Type | kWh | Stops | DC Fast | Home Charge |
|---|---|---|---|---|
| Average EV | 137.5 | 1 | $48.14 | $22.01 |
| Efficient EV | 114.6 | 1 | $40.12 | $18.34 |
| EV Truck/SUV | 183.4 | 2 | $64.19 | $29.34 |
Gas CO2
160 kg
EV CO2
54 kg (66% less)
Plan for 1 charging stop. A 30-minute DC fast charge mid-route should be enough to complete the trip comfortably.
DC fast charging avg $0.35/kWh. Home charging avg $0.16/kWh. US grid CO2: 0.39 kg/kWh.
Travel Intel
Current conditions at both ends of the drive.
Destination
Milbank, SD
Afternoon in Milbank on Wednesday
Local time
2:02 PM
CDT
Current temp
71°F
Unavailable
Live forecast
Seasonal Notes
Summer travel usually means heavier construction, hotter rest stops, and busier weekend traffic around major cities.
Winter travel shortens daylight, so a route that looks manageable on paper can feel much longer after dark.
Holiday weekends tend to make both departure and arrival windows slower than the raw route time suggests.
Time zone
1 hour later
The destination clock does not match departure time, so double-check hotel check-in windows and late arrival plans.
Temperature spread
7 degrees cooler at arrival
A meaningful temperature swing is a good cue to rethink layers, water, and how soon you want to arrive.
Road read
7h 39m on the road
Start early — leave by 6-7 AM to arrive at a reasonable hour.
Weather data from the National Weather Service. Conditions may change; check closer to your travel date.
Frequently Asked Questions
The drive from Rapid City, SD to Milbank, SD covers 458.5 miles and takes about 7h 39m without stops. Add 15-30 minutes for a fuel or rest stop on longer drives.
The main roads are I 90, I 29, SD Highway 15. Most of the drive stays on highways, so watch for ramps and exits.
This is a comfortable same-day trip.
The midpoint is about 229.2 miles from Rapid City, SD. Look for rest areas, gas stations, or food options near the halfway mark.
At current regular gas prices, expect to spend about $71.68 one way. This estimate uses 25.4 MPG — your actual cost will vary with your vehicle's fuel efficiency and current gas prices.
Start early — leave by 6-7 AM to arrive at a reasonable hour. This is a long drive — plan for a morning departure or consider splitting it into two days.
Plan about 2 meaningful breaks for fuel, food, or rest. Plan on a short reset every 3 to 4 hours to stay fresh behind the wheel.
The route itself is not hard, but at 7h 39m, endurance matters. Plan breaks every 2-3 hours. The 10 decision points are all manageable with basic attention.
The main spots that need attention: at 0.4 miles (I 190; US 16): Navigation decision point; at 1.7 miles (I 190): Highway fork - watch signs carefully; at 340.8 miles: Exit ramp - move to the correct lane early.
On the drive from Rapid City, SD to Milbank, SD, road signs begin pointing toward Estelline along the way.
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