Mobridge to Rapid City is 299.9 miles and takes about 5h 16m via US 83 and I-90, with a fuel budget near $38 and enough daylight to finish in a day. This is a single-day, highway-focused journey that keeps you within South Dakota's Great Plains region for its entirety. Given its straightforward nature and manageable duration, it’s a practical choice if you're looking for an efficient transit between these two points. Expect a consistent driving experience with minimal complexity, making it ideal for a no-fuss road trip.
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
1 planned break
Plan on a short reset every 3 to 4 hours to stay fresh behind the wheel.
Midpoint
149.9 miles from Mobridge, SD
A natural place for your longest stop of the day
, about 2h 50m into the drive
.
Main Roads
Road
Distance
Duration
US 83
95.4 mi
1h 29m
US Highway 83
66.9 mi
1h 16m
I 90
59.9 mi
58m
South US Highway 83
30.6 mi
34m
US Highway 12
22.1 mi
25m
US 14
16.4 mi
19m
I 190
1.4 mi
1m
East Grand Crossing
1 mi
1m
Longest stretch:
US 83
— 95.4 mi, about 1h 29m
Traffic on I-90
Hour-of-day weekday pattern from 18 FHWA count stations on your route.
Peak
4 PM
~765 veh/hr typical
· worst 1,010
Quietest
2 AM
~30 veh/hr
Peak-to-quiet ratio
25.5×
busier at peak than in the quiet hours
12a6anoon6p11p
Averaged across 51 weeks of 2023 FHWA Travel Monitoring Analysis System data. Weekday hours only (Mon–Fri).
Turn-by-Turn Driving Directions
Step-by-step road directions between Mobridge, SD and Rapid City, SD.
1
Start on 4th Avenue East
73 ft·5 sec·4th Avenue East
2
Turn right onto US 12; SD 20; SD 1804
1.0 mi·1 min·East Grand Crossing
3
Continue on US 12; SD 20; SD 1804
19 mi·21 min·US Highway 12
4
Continue on US 12; US 83; SD 20
1.0 mi·1 min·Highway 12 & 83
5
Continue on US 12; US 83; SD 20
3.6 mi·4 min·US Highway 12
6
Turn right onto US 83; SD 20
31 mi·35 min·US Highway 83
7
Continue on US 83; US 212
36 mi·41 min·US Highway 83
8
Turn right onto US 14; US 83
16 mi·19 min·US 14; US 83
9
Continue on SD 1889
1.0 mi·1 min·North Euclid Avenue
10
Turn left onto SD 1889
0.1 mi·13 sec·South Pierre Street
11
Turn right onto US 14; US 83; SD 34
0.9 mi·1 min·West Sioux Avenue
12
Continue on US 14; US 83; SD 34
0.5 mi·35 sec·North Highway 83
13
Continue on US 83
0.7 mi·45 sec·North Deadwood Street
14
Continue on US 83; SD 1806
1.0 mi·1 min·North 1st Street
15
Continue on US 83; SD 1806
31 mi·34 min·South US Highway 83
16
Take the exit onto US 83
95 mi·1 hr 29 min·US 83
17
Continue on I 90
60 mi·58 min·I 90
18
Take the exit
0.4 mi·1 min
Toward I 190, US 16: Downtown, Black Hawk National Forest, Mount Rushmore
19
Continue on I 190
1.4 mi·1 min·I 190
20
Turn left onto US 16; SD 44
0.2 mi·39 sec·Omaha Street
Use the right lane.
21
Turn right onto US 16
0.2 mi·45 sec·Mount Rushmore Road
Use the right lane.
22
Arrive at destination
US 16
Trip Plan
For this 5-hour drive, consider an early morning departure from Mobridge to maximize daylight and allow for a relaxed pace. With only one recommended stop and a highway-focused profile, you can easily complete this trip in a single day. Keep an eye on your fuel gauge, especially during the 95.4-mile stretch on US 83, as services might be spaced out. You'll reach Rapid City with ample time to settle in or continue evening activities, thanks to its manageable length.
Morning Departure
An early start around 7-8 AM gets you there with plenty of daylight left.
Evening Departure
A late afternoon start means arriving after dark. Morning is better.
You can normally do this drive in one day.
Plan roughly 1 meaningful break for fuel, food, and rest.
The halfway point lands around 149.9 miles from Mobridge, SD, or about 2h 50m into the drive.
The longest continuous stretch on this route runs about 95.4 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 66 miles or 1h 15m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 149.9 miles or 2h 50m in
This is the best place for your longest stop, a real meal, and a full fuel check.
Final approach
Final hour starts around 4h 21m
Traffic, exits, and arrival timing usually matter more near Rapid City, SD than in the middle of the route.
Before You Leave
+
Open the route before leaving Mobridge, 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.
Day 1
Settle into the route from Mobridge, SD
This is one driving day of about 299.9 miles and 5h 16m.
Your first comfortable stop window is around 66 miles from Mobridge, SD.
This route can stay practical as a one-day drive if traffic stays reasonable.
Plan about 1 real break rather than only quick fuel stops.
The longest stretch is on US 83 for about 95.4 miles.
Where to Stop
Rest stops, refuel points, and overnight suggestions along this route.
Place data sourced from public business listings. Hours and availability may vary.
Heads-up: tricky spots
5 of 9
5 decision points cluster between mile 0 and 299.7 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
4
0 mi into trip|~0m in|US 12; SD 20; SD 1804 / East Grand Crossing
Turn right onto US 12; SD 20; SD 1804 / East Grand Crossing
Navigation decision point
4
108.5 mi into trip|~2h 5m in|US 14; US 83; SD 34 / West Sioux Avenue
Turn right onto US 14; US 83; SD 34 / West Sioux Avenue
Navigation decision point
5
297.6 mi into trip|~5h 11m in
Take the exit toward I 190, US 16: Downtown, Black Hawk National Forest, Mount Rushmore
Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one
Toward I 190, US 16: Downtown, Black Hawk Natio...
4
299.4 mi into trip|~5h 15m in|US 16; SD 44 / Omaha Street
Turn left onto US 16; SD 44 / Omaha Street
Lane positioning matters here
Use the right lane.
7
299.7 mi into trip|~5h 15m in|US 16 / Mount Rushmore Road
Turn right onto US 16 / Mount Rushmore Road
Lane positioning matters here
Use the right lane.
Fuel & Cost
Regular Gas
$44.29 one way
$88.58 round trip
$3.75/gal25.4 MPG avg105 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$4.14
$48.89
$97.79
premium
$4.72
$55.68
$111.36
diesel
$4.80
$56.63
$113.25
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$44
Meals
$25–$50
Total
$69–$94
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 104.9 kg one way.
Prices: EIA weekly data, 2026-07-13.
Driving Electric?
About $31 in charging
· 1 stop
· 67% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
90
1
$31.49
$14.40
Efficient EV
75
0
$26.24
$12.00
EV Truck/SUV
120
1
$41.99
$19.19
Gas CO2
105 kg
EV CO2
35 kg (67% 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.
Forecast as of Jul 17, 2026
Origin
Mobridge, SD
Late night
in Mobridge on Sunday
Local time
1:42 AM
CDT
Current temp
92°F
Slight Chance Rain Showers
NNE 10 mph19% chanceLive forecast
Heat Advisory
Heat Advisory issued July 17 at 3:07PM MDT until July 19 at 9:00PM MDT by NWS Rapid City SD
Heat Advisory
Heat Advisory issued July 17 at 2:41PM CDT until July 17 at 9:00PM CDT by NWS Aberdeen SD
Destination
Rapid City, SD
Late night
in Rapid City on Sunday
Local time
12:42 AM
MDT
Current temp
95°F
Slight Chance Showers And Thunderstorms
NE 9 mph21% chanceLive forecast
Heat Advisory
Heat Advisory issued July 17 at 3:07PM MDT until July 19 at 9:00PM MDT by NWS Rapid City SD
Heat Advisory
Heat Advisory issued July 17 at 2:41PM CDT until July 17 at 9:00PM CDT by NWS Aberdeen SD
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 earlier
The destination clock does not match departure time, so double-check hotel check-in windows and late arrival plans.
Temperature spread
3 degrees warmer at arrival
A meaningful temperature swing is a good cue to rethink layers, water, and how soon you want to arrive.
Road read
5h 16m on the road
An early start around 7-8 AM gets you there with plenty of daylight left.
Weather data from the National Weather Service. Conditions may change; check closer to your travel date.
National Parks Near This Route
Worth a detour if your schedule allows.
Mount Rushmore National Memorial
National Memorial
Majestic figures of George Washington, Thomas Jefferson, Theodore Roosevelt and Abraham Lincoln, surrounded by the beauty of the Black Hills of South Dakota, tell the story of the birth, growth, devel...
18 mi from route
~44 min detour
Free
near mile 299.9
The rugged beauty of the Badlands draws visitors from around the world. These striking geologic deposits contain one of the world’s richest fossil beds. Ancient horses and rhinos once roamed here. The...
24 mi from route
~60 min detour
$30
near mile 237.8
Park data from the National Park Service API. Alerts update every 2 hours.
More Details
What kind of drive is this?
This route is predominantly a highway drive, with 98% of the journey on major roads like US 83 and I-90. You'll encounter a substantial uninterrupted stretch of 95.4 miles on US 83, offering a chance to settle into a steady pace. The character of the drive is largely consistent, characterized by the open landscapes typical of the Great Plains. While primarily highway, the shift to I-90 as you approach Rapid City will feel familiar to interstate travelers.
98% highway — fuel and pacing are the main things to plan.
22 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 95.4 mi on US 83.
How Hard Is This Drive?
3/10
This is a straightforward highway drive that stays mostly on US 83 and US Highway 83. There are only a few real navigation decisions along the way. The trickiest moment comes early in the drive near US 12; SD 20; SD 1804 / East Grand Crossing.
Driving Effort3/10
Easy - simple navigation with a manageable amount of wheel time
Balances navigation complexity with total wheel time.
This is a straightforward 5h 16m drive. You will face about 9 decision points, but nothing that requires special attention if you follow navigation.
Where does it get tricky?
The main spots that need attention: near the start (US 12; SD 20; SD 1804 / East Grand Crossing): Navigation decision point; at 108.5 miles (US 14; US 83; SD 34 / West Sioux Avenue): Navigation decision point; at 297.6 miles: Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one.
Mobridge, also known as Kȟowákataŋ Otȟúŋwahe (Lakota: Kȟowákataŋ Otȟúŋwahe; lit. "Over-the-River Town") is a small town in South Dakota's Great Lakes region.
Rapid City is the largest city in the Badlands and Black Hills region of South Dakota. It is a convenient base for travel on to the Mount Rushmore National Memorial, the Crazy Horse Memorial, the Badlands, and the Black Hills National Forest.
Top landmarks
•Hotel Alex Johnson — building in Rapid City, South Dakota
•Dinosaur Park — sculpture park in Rapid City, South Dakota
The longest stretch is about 95.4 miles on US 83. The full list of main roads is in the Roads section above.
Yes — we found about 15 rest areas or service plazas within a short detour of the route (from OpenStreetMap). See the Rest Stops tab under Nearby Places for locations and mile markers. Plan to stretch, use the bathroom, and top off fluids every 2–3 hours on longer drives.
Only with planning. This is a long drive for kids — consider splitting it into two days rather than pushing through. Plan at least 1 meaningful breaks. There are 15 rest areas along the route for bathroom stops.
Mostly yes along the main roads, but rural stretches through SD can have sparse or no coverage. Before you leave, download offline Google Maps or Apple Maps for the route, and consider downloading music or podcasts instead of streaming. If you depend on data for navigation, keep a paper backup of the turn-by-turn directions.
The main spots that need attention: near the start (US 12; SD 20; SD 1804 / East Grand Crossing): Navigation decision point; at 108.5 miles (US 14; US 83; SD 34 / West Sioux Avenue): Navigation decision point; at 297.6 miles: Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one.
Yes — Mount Rushmore National Memorial and Badlands National Park. See the National Parks section for detour distances and tips on detours.
Not recommended in a single day. At 5.3 hours each way, a round trip means 10.5 hours of driving — that is an unsafe level of fatigue for most drivers. Plan at least one night at Rapid City, SD before the return drive.
