Traveling from Tyndall to Rapid City covers 331.2 miles across the South Dakota plains, a journey that typically takes about 5 hours and 47 minutes behind the wheel. Because this trek is essentially a one-day commitment, you can easily complete it in a single stretch if you get an early start. Budgeting approximately $50 for fuel should cover your needs for the trip. You will spend the vast majority of your time on major routes, utilizing a combination of SD Highway 50, SD Highway 37, and I-90. While the drive is straightforward, it is best viewed as a functional connection between the eastern and western portions of the state rather than a leisurely sightseeing tour.
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
165.6 miles from Tyndall, SD
A natural place for your longest stop of the day
, about 3h 8m into the drive
.
Main Roads
Road
Distance
Duration
I 90
274.3 mi
4h 19m
SD Highway 37
47.1 mi
1h 10m
SD Highway 50
3.8 mi
5m
I 190
1.4 mi
1m
303rd Street
1.3 mi
3m
South Highway 37
1 mi
1m
West 20th Avenue
0.5 mi
1m
South Burr Street
0.4 mi
<1m
Longest stretch:
I 90
— 274.3 mi, about 4h 19m
Turn-by-Turn Driving Directions
Step-by-step road directions between Tyndall, SD and Rapid City, SD.
1
Start on West 18th Avenue
50 ft·7 sec·West 18th Avenue
2
Turn left onto Main Street
0.2 mi·30 sec·Main Street
3
Turn left onto West 20th Avenue
0.5 mi·1 min·West 20th Avenue
4
Continue on CR 303
1.3 mi·3 min·303rd Street
5
Turn right onto SD 37; SD 50
3.8 mi·5 min·SD Highway 50
6
Turn right onto SD 37
47 mi·1 hr 10 min·SD Highway 37
7
Continue on SD 37
1.0 mi·1 min·South Highway 37
8
Continue on SD 37
0.4 mi·34 sec·South Burr Street
9
Take the ramp
0.4 mi·52 sec
10
Merge onto I 90; SD 37
274 mi·4 hr 19 min·I 90; SD 37
11
Take the exit
0.4 mi·1 min
Toward I 190, US 16: Downtown, Black Hawk National Forest, Mount Rushmore
12
Continue on I 190
1.4 mi·1 min·I 190
13
Turn left onto US 16; SD 44
0.2 mi·39 sec·Omaha Street
Use the right lane.
14
Turn right onto US 16
0.2 mi·45 sec·Mount Rushmore Road
Use the right lane.
15
Arrive at destination
US 16
Trip Plan
Since this is a long, single-day drive, aim to depart Tyndall early in the morning to avoid fatigue during the final leg into Rapid City. You should plan for at least one dedicated stop to stretch your legs and refresh, especially given the lengthy 274.3-mile interstate stretch. Keep a close eye on your fuel gauge during the interstate portion to ensure you aren't caught off guard between service exits. Because the route relies so heavily on I-90, check for any major interstate construction or weather alerts before you head out. Having your $50 fuel budget ready in advance will help keep your stops quick and efficient, allowing you to reach your destination before the day is out.
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 165.6 miles from Tyndall, SD, or about 3h 8m into the drive.
The longest continuous stretch on this route runs about 274.3 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 73 miles or 1h 40m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 165.6 miles or 3h 8m 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 48m
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 Tyndall, 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 Tyndall, SD
This is one driving day of about 331.2 miles and 5h 47m.
Your first comfortable stop window is around 73 miles from Tyndall, 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 274.3 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 8
5 decision points cluster between mile 0 and 331 — 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|Main Street
Turn left onto Main Street
Navigation decision point
4
0.2 mi into trip|~0m in|West 20th Avenue
Turn left onto West 20th Avenue
Navigation decision point
4
5.7 mi into trip|~10m in|SD 37 / SD Highway 37
Turn right onto SD 37 / SD Highway 37
Navigation decision point
5
328.9 mi into trip|~5h 42m 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...
7
331 mi into trip|~5h 46m 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
$51.78 one way
$103.56 round trip
$3.97/gal25.4 MPG avg116 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$4.36
$56.85
$113.70
premium
$4.89
$63.74
$127.47
diesel
$5.61
$73.12
$146.25
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$52
Meals
$25–$50
Total
$77–$102
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 115.9 kg one way.
Prices: EIA weekly data, 2026-04-13.
Driving Electric?
About $35 in charging
· 1 stop
· 66% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
99.4
1
$34.78
$15.90
Efficient EV
82.8
0
$28.98
$13.25
EV Truck/SUV
132.5
1
$46.37
$21.20
Gas CO2
116 kg
EV CO2
39 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 Apr 15, 2026
Origin
Tyndall, SD
Evening
in Tyndall on Saturday
Local time
8:10 PM
CDT
Current temp
78°F
Unavailable
Live forecast
Destination
Rapid City, SD
Evening
in Rapid City on Saturday
Local time
7:10 PM
MDT
Current temp
78°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 earlier
The destination clock does not match departure time, so double-check hotel check-in windows and late arrival plans.
Temperature spread
Very similar conditions
Both ends of the route are sitting at about the same temperature right now.
Road read
5h 47m 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 331.2
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...
25 mi from route
~62 min detour
$30
near mile 274.1
Park data from the National Park Service API. Alerts update every 2 hours.
More Details
What kind of drive is this?
Expect a highly efficient, highway-focused experience, as 99% of your travel occurs on major thoroughfares. You will navigate local highways briefly before merging onto I-90, which serves as the backbone of the trip. The most significant portion of your drive involves a 274.3-mile uninterrupted stretch along the interstate, where you can maintain a steady pace across the landscape. Because the route is so heavily dominated by high-speed roads, it feels more like a transit-oriented mission than a technical driving challenge. Prepare for long, consistent miles that require focus and vigilance as you transition from the Great Plains toward your destination.
99% 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: 274.3 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 37. There are only a few real navigation decisions along the way. The trickiest moment comes early in the drive near Main 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 47m 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: near the start (Main Street): Navigation decision point; at 0.2 miles (West 20th Avenue): Navigation decision point; at 5.7 miles (SD 37 / SD Highway 37): Navigation decision point.
Elevation Profile
Gently rolling terrain
3,243 ft1,322 ft
Total Climb
2,209 ft
Total Descent
388 ft
Highest Point
3,243 ft
~331.2 mi in
Elevation Range
1,922 ft
Who Is This Route For?
Weekend Trip
Doable as a same-day drive at 5h 47m. Total distance: 331.2 miles.
Family Friendly
Moderate complexity with 1 natural rest stops along the way.
The longest stretch is about 274.3 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.
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. Dedicated rest areas are limited, so plan gas or food stops as your bathroom breaks.
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 (Main Street): Navigation decision point; at 0.2 miles (West 20th Avenue): Navigation decision point; at 5.7 miles (SD 37 / SD Highway 37): Navigation decision point.
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.
