Spanning 179.3 miles across the South Dakota Great Plains, this route connects Madison to Gregory in about 3 hours and 48 minutes. It is perfectly suited for a single-day trip, allowing you to reach your destination without the need for an overnight split. Budgeting roughly $27 for fuel makes this an accessible excursion for those looking to traverse the heart of the state. You will primarily navigate via I-90, SD Highway 34, and SD Highway 45. Since both your starting point and destination reside within the Great Plains, expect a consistent landscape throughout the journey that feels familiar and grounded.
Trip Pace
Same-day drive is realistic
A same-day return is realistic if you keep stops short.
Break Rhythm
1 planned break
A short stop every 2 to 3 hours is enough for this drive.
Midpoint
89.7 miles from Madison, SD
A natural place for your longest stop of the day
, about 1h 43m into the drive
.
Main Roads
Road
Distance
Duration
I 90
60.1 mi
56m
SD Highway 34
26.6 mi
37m
SD Highway 45
23.9 mi
35m
SD Highway 25
23.6 mi
27m
State Highway 44
16 mi
23m
SD Highway 44
14.9 mi
22m
SD 47
10.6 mi
18m
Northwest 2nd Street
1.3 mi
1m
Longest stretch:
I 90
— 60.1 mi, about 56m
Turn-by-Turn Driving Directions
Step-by-step road directions between Madison, SD and Gregory, 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
60 mi·56 min·I 90
7
Take the exit
0.3 mi·50 sec
Toward SD 45 South: Platte
8
Turn left onto SD 45
24 mi·35 min·SD Highway 45
9
Continue on SD 45
0.7 mi·1 min·North Main Avenue
10
Turn right onto SD 44; SD 50
0.4 mi·35 sec·West 7th Street
11
Continue on SD 44; SD 50
15 mi·22 min·SD Highway 44;West 7th Street
12
Continue on SD 44
16 mi·23 min·State Highway 44
13
Turn left onto SD 47
11 mi·18 min·SD 47
14
Turn left onto West 6th Street
0.2 mi·56 sec·West 6th Street
15
Arrive at destination
East 6th Street
Trip Plan
For the smoothest experience, plan your departure to account for the total 3 hour and 48 minute duration, giving yourself plenty of daylight to navigate the state highway portions. Since the route includes one recommended stop, use that break to stretch your legs and refuel, as the $27 budget is based on efficient transit. Keep an eye on your fuel gauge when transitioning from the interstate to the state routes, as service intervals may fluctuate. Because this is a manageable one-day drive, you have the advantage of total flexibility in your departure time. Aim to complete your primary driving during mid-morning or early afternoon to ensure the best visibility on the secondary highways.
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 89.7 miles from Madison, SD, or about 1h 43m into the drive.
The longest continuous stretch on this route runs about 60.1 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 39 miles or 52m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 89.7 miles or 1h 43m in
This is the best place for your longest stop, a real meal, and a full fuel check.
Final approach
Final hour starts around 2h 56m
Traffic, exits, and arrival timing usually matter more near Gregory, 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 179.3 miles and 3h 48m.
Your first comfortable stop window is around 39 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 60.1 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 0.1 and 137.1 — 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
4
112.1 mi into trip|~2h 4m in
Take the exit toward SD 45 South: Platte
Exit ramp - move to the correct lane early
Toward SD 45 South: Platte
4
112.4 mi into trip|~2h 5m in|SD 45 / SD Highway 45
Turn left onto SD 45 / SD Highway 45
Navigation decision point
4
137.1 mi into trip|~2h 41m in|SD 44; SD 50 / West 7th Street
Turn right onto SD 44; SD 50 / West 7th Street
Navigation decision point
Fuel & Cost
Regular Gas
$28.03 one way
$56.06 round trip
$3.97/gal25.4 MPG avg63 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$4.36
$30.78
$61.55
premium
$4.89
$34.50
$69.01
diesel
$5.61
$39.59
$79.17
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$28
Meals
$25–$50
Total
$53–$78
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 62.7 kg one way.
Prices: EIA weekly data, 2026-04-13.
Driving Electric?
About $19 in charging
· 0 stops
· 67% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
53.8
0
$18.83
$8.61
Efficient EV
44.8
0
$15.69
$7.17
EV Truck/SUV
71.7
0
$25.10
$11.48
Gas CO2
63 kg
EV CO2
21 kg (67% less)
This trip is well within single-charge range for most EVs. No charging stops needed if you start fully charged.
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 Apr 15, 2026
Origin
Madison, SD
Night
in Madison on Saturday
Local time
9:44 PM
CDT
Current temp
74°F
Unavailable
Live forecast
Destination
Gregory, SD
Night
in Gregory on Saturday
Local time
9:44 PM
CDT
Current temp
47°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
Same local time
Origin and destination are on the same clock, so arrival timing is easier to judge at a glance.
Temperature spread
27 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
3h 48m on the road
Use the two city cards together: check the sky where you start, then compare it with the local time and temperature at arrival.
Weather data from the National Weather Service. Conditions may change; check closer to your travel date.
More Details
What kind of drive is this?
This is a highway-focused drive, with 98% of your journey spent on high-speed thoroughfares. You will begin with a 60.1-mile stretch on I-90, which serves as the longest uninterrupted portion of the trip before you transition onto state highways. While the interstate offers a fast, efficient pace, shifting to SD Highway 34 and SD Highway 45 introduces a change in rhythm as you move onto smaller, two-lane roads. The personality of this drive is steady and reliable, prioritizing direct travel over technical twists or complex navigation. Behind the wheel, you can expect a straightforward experience that keeps you moving toward the west.
98% highway — fuel and pacing are the main things to plan.
15 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 60.1 mi on I 90.
How Hard Is This Drive?
2/10
This is a straightforward highway drive that stays mostly on I 90 and SD Highway 34. Navigation is very simple - set it and forget it for most of the drive. The trickiest moment comes around 0.1 miles in near SD 34 / Northwest 2nd Street.
Driving Effort2/10
Very easy - short and simple to drive
Balances navigation complexity with total wheel time.
The drive from Madison, SD to Gregory, SD is easy. At 3h 48m with 98% highway, most drivers will find it relaxed and low-stress.
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 112.1 miles: Exit ramp - move to the correct lane early.
Who Is This Route For?
Weekend Trip
Doable as a same-day drive at 3h 48m. Total distance: 179.3 miles.
Family Friendly
Moderate complexity with 1 natural rest stops along the way.
The longest stretch is about 60.1 miles on I 90. The full list of main roads is in the Roads section above.
We did not find dedicated rest areas on this route. For a drive this long, plan bathroom and stretch breaks around gas stations, fast-food stops, or small-town downtowns — check the Nearby Places section for options.
Yes, with realistic expectations. Build in a stop roughly every 2 hours, have snacks and activities ready, and check the Nearby Places tabs for kid-friendly stops along the way.
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 112.1 miles: Exit ramp - move to the correct lane early.
Possible but tiring. At 3.8 hours each way, an in-and-out day trip would put you behind the wheel for 7.6 hours — manageable with a long break at Gregory, SD, but most travelers stay overnight.
