Spanning 346.5 miles across South Dakota, this trip connects Madison to Rapid City in approximately 5 hours and 48 minutes of drive time. You will spend the vast majority of your journey on I-90, making this a straightforward, highway-focused route that is easily manageable as a single-day trip. Budgeting roughly $53 for fuel should cover your transit across the Great Plains from east to west. While you will utilize SD Highway 34 and SD Highway 25 for local connections, the interstate serves as your primary artery for the duration of the trek. If you prefer a faster pace, the direct nature of this drive allows you to reach your destination without the need for an overnight split.
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
173.2 miles from Madison, SD
A natural place for your longest stop of the day
, about 3h 2m into the drive
.
Main Roads
Road
Distance
Duration
I 90
292.2 mi
4h 36m
SD Highway 34
26.6 mi
37m
SD Highway 25
23.6 mi
27m
I 190
1.4 mi
1m
Northwest 2nd Street
1.3 mi
1m
Mount Rushmore Road
0.2 mi
<1m
Omaha Street
0.2 mi
<1m
North Egan Avenue
<0.1 mi
<1m
Longest stretch:
I 90
— 292.2 mi, about 4h 36m
Traffic on I-90
Hour-of-day weekday pattern from 29 FHWA count stations on your route.
Peak
4 PM
~568 veh/hr typical
· worst 800
Quietest
2 AM
~27 veh/hr
Peak-to-quiet ratio
21×
busier at peak than in the quiet hours
12a6anoon6p11p
Averaged across 52 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 Madison, SD and Rapid City, SD.
1
Start on North Egan Avenue
384 ft·20 sec·North Egan Avenue
2
Turn left onto SD 34
1.3 mi·1 min·Northwest 2nd Street
3
Continue on US 81; SD 34
27 mi·37 min·SD Highway 34
4
Turn left onto SD 25
24 mi·27 min·SD Highway 25
5
Take the ramp
0.3 mi·43 sec
6
Merge onto I 90
292 mi·4 hr 36 min·I 90
7
Take the exit
0.4 mi·1 min
Toward I 190, US 16: Downtown, Black Hawk National Forest, Mount Rushmore
8
Continue on I 190
1.4 mi·1 min·I 190
9
Turn left onto US 16; SD 44
0.2 mi·39 sec·Omaha Street
Use the right lane.
10
Turn right onto US 16
0.2 mi·45 sec·Mount Rushmore Road
Use the right lane.
11
Arrive at destination
US 16
Trip Plan
To make the most of this 346.5-mile journey, try to depart early in the morning to account for the nearly six-hour duration. Planning for at least one dedicated stop is essential to break up the long interstate segments and keep your energy levels consistent. Since the route relies heavily on I-90, keep a close eye on your fuel gauge during the longest 292.2-mile stretch to ensure you don't run low between service intervals. Because this is a one-day trip, having flexibility in your departure time is a major advantage, allowing you to avoid peak traffic hours if necessary. Prioritize frequent hydration and movement breaks during your one planned stop to stay sharp throughout the drive.
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 173.2 miles from Madison, SD, or about 3h 2m into the drive.
The longest continuous stretch on this route runs about 292.2 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 76 miles or 1h 30m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 173.2 miles or 3h 2m 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 49m
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 Madison, 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 Madison, SD
This is one driving day of about 346.5 miles and 5h 48m.
Your first comfortable stop window is around 76 miles from Madison, 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 I 90 for about 292.2 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 7
5 decision points cluster between mile 0.1 and 346.2 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
4
0.1 mi into trip|~0m in|SD 34 / Northwest 2nd Street
Turn left onto SD 34 / Northwest 2nd Street
Navigation decision point
4
28 mi into trip|~39m in|SD 25 / SD Highway 25
Turn left onto SD 25 / SD Highway 25
Navigation decision point
5
344.2 mi into trip|~5h 44m 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
346 mi into trip|~5h 47m 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
346.2 mi into trip|~5h 48m 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
$51.17 one way
$102.34 round trip
$3.75/gal25.4 MPG avg121 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$4.14
$56.49
$112.98
premium
$4.72
$64.33
$128.67
diesel
$4.80
$65.43
$130.85
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$51
Meals
$25–$50
Total
$76–$101
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 121.2 kg one way.
Prices: EIA weekly data, 2026-07-13.
Driving Electric?
About $36 in charging
· 1 stop
· 66% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
104
1
$36.38
$16.63
Efficient EV
86.6
0
$30.32
$13.86
EV Truck/SUV
138.6
1
$48.51
$22.18
Gas CO2
121 kg
EV CO2
41 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.
Forecast as of Jul 17, 2026
Origin
Madison, SD
Evening
in Madison on Saturday
Local time
8:16 PM
CDT
Current temp
94°F
Sunny
SSW 10 mph0% chanceLive forecast
Heat Advisory
Heat Advisory issued July 17 at 1:49AM MDT until July 19 at 9:00PM MDT by NWS Rapid City SD
Heat Advisory
Heat Advisory issued July 17 at 1:31AM CDT until July 17 at 9:00PM CDT by NWS Sioux Falls SD
Destination
Rapid City, SD
Evening
in Rapid City on Saturday
Local time
7:16 PM
MDT
Current temp
70°F
Mostly Clear
W 5 mph5% chanceLive forecast
Heat Advisory
Heat Advisory issued July 17 at 1:49AM MDT until July 19 at 9:00PM MDT by NWS Rapid City SD
Heat Advisory
Heat Advisory issued July 17 at 1:31AM CDT until July 17 at 9:00PM CDT by NWS Sioux Falls 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
24 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
5h 48m 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 346.5
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
~61 min detour
$30
near mile 286.7
Park data from the National Park Service API. Alerts update every 2 hours.
More Details
What kind of drive is this?
With 99% of your travel taking place on highways, expect a consistent and efficient experience behind the wheel. The route is dominated by a 292.2-mile stretch on I-90, providing a predictable rhythm that defines the majority of your time on the road. You can anticipate a highway-focused drive that minimizes technical navigation, allowing you to settle into a steady cruising speed. As you transition across the state, the character of the road remains largely uniform, emphasizing distance and speed over complex turns. This setup is ideal if you are looking for a straightforward, high-speed transit rather than a winding backroad adventure.
99% highway — fuel and pacing are the main things to plan.
11 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 292.2 mi on I 90.
How Hard Is This Drive?
3/10
This is a straightforward highway drive that stays mostly on I 90 and SD Highway 34. There are only a few real navigation decisions along the way. The trickiest moment comes around 0.1 miles in near SD 34 / Northwest 2nd Street.
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 48m drive. You will face about 7 decision points, but nothing that requires special attention if you follow navigation.
Where does it get tricky?
The main spots that need attention: at 0.1 miles (SD 34 / Northwest 2nd Street): Navigation decision point; at 28 miles (SD 25 / SD Highway 25): Navigation decision point; at 344.2 miles: Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one.
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 292.2 miles on I 90. The full list of main roads is in the Roads section above.
Yes — we found about 21 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 21 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: at 0.1 miles (SD 34 / Northwest 2nd Street): Navigation decision point; at 28 miles (SD 25 / SD Highway 25): Navigation decision point; at 344.2 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 5.8 hours each way, a round trip means 11.6 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.
