Origin
Rapid City, SD
Evening in Rapid City on Sunday
Local time
5:09 PM
MDT
Current temp
40°F
Unavailable
Live forecast
Trip from Rapid City, SD to Gregory, SD
Drive Time
4h 28m
Distance
241.4 mi
389 km
Drive Score
8/10
Great drive
Same Day?
Yes, doable
Fuel Cost
$37
one way
EV Charging
Loading...
station data
Best Time to Leave
4 AM
4h 15m
★
6 AM
4h 28m
8 AM
4h 55m
10 AM
4h 37m
12 PM
4h 35m
3 PM
4h 39m
5 PM
4h 53m
8 PM
4h 20m
Estimated drive times based on typical traffic patterns. Actual times may vary with weather, construction, and real-time conditions.
Rapid City, SD
Mike Lensing
Gregory, SD
Luis Quintero
Trip Overview
Spanning 241.4 miles across the South Dakota Great Plains, this drive typically takes about 4 hours and 28 minutes to complete. You will primarily navigate via I-90 and US-183, making it a straightforward trek that is easily manageable as a single-day trip. Budgeting roughly $37 for fuel will cover your transit from Rapid City to Gregory. Since both locations are situated within the Great Plains, you can expect consistent landscape conditions throughout your journey. This route is ideal for travelers looking to move efficiently between these two points without the need for an overnight stop.
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
120.7 miles from Rapid City, SD
A natural place for your longest stop of the day , about 1h 56m into the drive .
Drive Character
This trip is heavily highway-focused, with 85% of your time spent on major routes. You will face a significant initial stretch, covering 168.5 miles of uninterrupted driving along I-90. Once you transition onto US-183 and 277th Street, the pace shifts from the high-speed interstate to a more localized driving experience. Expect a steady, rhythmic drive that requires sustained focus during that long interstate leg. The personality of the road remains functional and efficient, prioritizing speed and directness over technical maneuvers.
Most of the miles stay on highways, which makes pacing and fuel planning easier than turn-by-turn city driving.
There are about 11 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 168.5 miles.
How Hard Is This Drive?
This is a straightforward highway drive that stays mostly on I 90 and US 183. 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
3/10
Easy - simple navigation with a manageable amount of wheel time
This is a straightforward 4h 28m drive. You will face about 8 decision points, but nothing that requires special attention if you follow navigation.
Where does it get tricky?
The main spots that need attention: at 0.4 miles (I 190; US 16): Navigation decision point; at 1.7 miles (I 190): Highway fork - watch signs carefully; at 170.4 miles: Exit ramp - move to the correct lane early.
Critical Maneuvers
5 of 8 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
170.4 mi into trip
|
~2h 43m in
Take the exit toward US 183: Winner
Exit ramp - move to the correct lane early
Toward US 183: Winner
5
170.8 mi into trip
|
~2h 44m in
|
US 183
Turn right onto US 183
Lane positioning matters here
Use the none lane.
5
206.4 mi into trip
|
~3h 35m in
|
US 18; US 183; SD 44 / 277th Street
At end of road, turn left onto US 18; US 183; SD 44 / 277th Street
Navigation decision point
Main Roads
| Road | Distance | Duration |
|---|---|---|
| I 90 | 168.5 mi | 2h 40m |
| US 183 | 35.7 mi | 50m |
| 277th Street | 34.4 mi | 51m |
| I 190 | 1.5 mi | 2m |
| Park Avenue | 0.4 mi | <1m |
| West 6th Street | 0.2 mi | <1m |
| Mount Rushmore Road | 0.2 mi | <1m |
| Omaha Street | 0.2 mi | <1m |
Longest stretch:
I 90
— 168.5 mi, about 2h 40m
Turn-by-Turn Driving Directions
Step-by-step road directions between Rapid City, SD and Gregory, 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
168 mi
·
2 hr 40 min
·
I 90; US 14; US 16 Truck; SD 79
Use the none lane.
6
Take the exit
0.3 mi
·
42 sec
Toward US 183: Winner
7
Turn right onto US 183
36 mi
·
50 min
·
US 183
Use the none lane.
8
At end of road, turn left onto US 18; US 183; SD 44
34 mi
·
51 min
·
277th Street
9
Turn left onto SD 47
0.4 mi
·
41 sec
·
Park Avenue
10
Turn right onto West 6th Street
0.2 mi
·
56 sec
·
West 6th Street
11
Arrive at destination
East 6th Street
Trip Plan
Plan for at least one stop during your 4.5-hour journey to keep your energy levels consistent. Because the longest segment is quite substantial, try to fuel up before leaving Rapid City to ensure you have enough buffer for the remaining miles. Departing early in the morning allows you to capitalize on lighter traffic, giving you more flexibility if you encounter unexpected delays. Since the route is relatively short, you have the advantage of reaching your destination in Gregory with plenty of daylight left. Keep a close eye on your mileage after turning off I-90, as navigating the secondary roads requires a bit more attention to signage compared to the interstate.
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 120.7 miles from Rapid City, SD, or about 1h 56m into the drive.
The longest continuous stretch on this route runs about 168.5 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 80 miles or 1h 17m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 120.7 miles or 1h 56m in
This is the best place for your longest stop, a real meal, and a full fuel check.
Final approach
Final hour starts around 3h 23m
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 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.
Day 1
Settle into the route from Rapid City, SD
This is one driving day of about 241.4 miles and 4h 28m.
Your first comfortable stop window is around 80 miles from Rapid City, 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 168.5 miles.
Where to Stop
Rest stops, refuel points, and overnight suggestions along this route.
Halfway Point
Midpoint
About 120.7 mi from Rapid City, SD · 1h 56m into the drive
Mid-route town
Meal stop
121 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 80 miles helps settle the day before fatigue starts building.
Meal break
The midpoint is around 120.7 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 168.5 miles.
Arriving in Gregory, SD
The final approach into Gregory, 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 Gregory, 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
$36.67 one way
$73.33 round trip
$3.86/gal
25.4 MPG avg
85 kg CO2
| Fuel Type | $/gal | One Way | Round Trip |
|---|---|---|---|
| midgrade | $4.25 | $40.42 | $80.84 |
| premium | $4.80 | $45.57 | $91.14 |
| diesel | $5.64 | $53.63 | $107.26 |
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$37
Meals
$25–$50
Total
$62–$87
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 84.5 kg one way. Prices: EIA weekly data, 2026-04-06.
Driving Electric?
About $25 in charging · 0 stops · 67% less CO2
| Vehicle Type | kWh | Stops | DC Fast | Home Charge |
|---|---|---|---|---|
| Average EV | 72.4 | 0 | $25.35 | $11.59 |
| Efficient EV | 60.4 | 0 | $21.12 | $9.66 |
| EV Truck/SUV | 96.6 | 1 | $33.80 | $15.45 |
Gas CO2
84 kg
EV CO2
28 kg (67% less)
Plan for 0 charging stops, roughly every 270 miles. Allow 25-40 minutes per stop at a DC fast charger.
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
Gregory, SD
Evening in Gregory on Sunday
Local time
6:09 PM
CDT
Current temp
43°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
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
4h 28m 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.
Frequently Asked Questions
The drive from Rapid City, SD to Gregory, SD covers 241.4 miles and takes about 4h 28m without stops. Add 15-30 minutes for a fuel or rest stop on longer drives.
The main roads are I 90, US 183, 277th Street. Most of the drive stays on highways, so watch for ramps and exits.
This is a comfortable same-day trip.
The midpoint is about 120.7 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 $36.67 one way. This estimate uses 25.4 MPG — your actual cost will vary with your vehicle's fuel efficiency and current gas prices.
An early start around 7-8 AM gets you there with plenty of daylight left. A late afternoon start means arriving after dark. Morning is better.
Plan about 1 meaningful break for fuel, food, or rest. Plan on a short reset every 3 to 4 hours to stay fresh behind the wheel.
This is a straightforward 4h 28m drive. You will face about 8 decision points, but nothing that requires special attention if you follow navigation.
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 170.4 miles: Exit ramp - move to the correct lane early.
The route from Rapid City, SD to Gregory, SD does not surface many named destination signs beyond the main corridor.
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