Spanning 321 miles across the Great Plains of South Dakota, this trip connects Tyndall to Box Elder in approximately 5 hours and 35 minutes. Given the duration, it is perfectly suited for a single-day journey, though you should budget roughly $49 for fuel to complete the transit. The route relies heavily on major thoroughfares, primarily using SD Highway 50, SD Highway 37, and I-90 to navigate the state. Because you are traveling within the same region, the landscape remains consistent, offering a straightforward driving experience. Whether you are looking to reach your destination quickly or prefer a steady pace, this path provides a reliable link between the two locations.
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
160.5 miles from Tyndall, SD
A natural place for your longest stop of the day
, about 3h 2m into the drive
.
Main Roads
Road
Distance
Duration
I 90
264.4 mi
4h 8m
SD Highway 37
47.1 mi
1h 10m
SD Highway 50
3.8 mi
5m
303rd Street
1.3 mi
3m
South Highway 37
1 mi
1m
Highway 1416
0.9 mi
1m
West 20th Avenue
0.5 mi
1m
Liberty Boulevard
0.5 mi
<1m
Longest stretch:
I 90
— 264.4 mi, about 4h 8m
Turn-by-Turn Driving Directions
Step-by-step road directions between Tyndall, SD and Box Elder, 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
264 mi·4 hr 8 min·I 90; SD 37
11
Take the exit
0.4 mi·47 sec
Toward Box Elder, Elisworth AirForce Base
12
Keep slight left at fork
92 ft·7 sec
13
Turn left onto Liberty Boulevard
0.5 mi·52 sec·Liberty Boulevard
14
Turn right onto Highway 1416
0.9 mi·1 min·Highway 1416
15
Turn left onto Oak Street
0.1 mi·31 sec·Oak Street
16
Turn right onto Front Street
94 ft·4 sec·Front Street
17
Arrive at destination
Front Street
Trip Plan
To keep your drive comfortable, plan for at least one dedicated stop to stretch your legs during the 5-hour and 35-minute transit. Since the majority of your time is spent on I-90, keep a close eye on your fuel gauge before merging onto the interstate to avoid unnecessary stops in more remote stretches. Departing early in the morning is your best strategy to avoid fatigue, as this allows you to complete the 321-mile trip well before sunset. Because the route is highly efficient, you have the flexibility to adjust your departure time based on your personal schedule without worrying about complex road conditions. Use the single recommended stop strategically to balance the long, uninterrupted 264.4-mile stretch of 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 160.5 miles from Tyndall, SD, or about 3h 2m into the drive.
The longest continuous stretch on this route runs about 264.4 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 71 miles or 1h 38m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 160.5 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 39m
Traffic, exits, and arrival timing usually matter more near Box Elder, 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 321 miles and 5h 35m.
Your first comfortable stop window is around 71 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 264.4 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 11
5 decision points cluster between mile 0 and 320.9 — 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
319 mi into trip|~5h 31m in
Take the exit toward Box Elder, Elisworth AirForce Base
Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one
Toward Box Elder, Elisworth AirForce Base
5
320.9 mi into trip|~5h 35m in|Front Street
Turn right onto Front Street
Navigation decision point
Fuel & Cost
Regular Gas
$50.18 one way
$100.37 round trip
$3.97/gal25.4 MPG avg112 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$4.36
$55.10
$110.20
premium
$4.89
$61.77
$123.55
diesel
$5.61
$70.87
$141.75
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$50
Meals
$25–$50
Total
$75–$100
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 112.3 kg one way.
Prices: EIA weekly data, 2026-04-13.
Driving Electric?
About $34 in charging
· 1 stop
· 66% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
96.3
1
$33.71
$15.41
Efficient EV
80.3
0
$28.09
$12.84
EV Truck/SUV
128.4
1
$44.94
$20.54
Gas CO2
112 kg
EV CO2
38 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 14, 2026
Origin
Tyndall, SD
Evening
in Tyndall on Saturday
Local time
8:08 PM
CDT
Current temp
47°F
Partly Cloudy
NNE 5 mph7% chanceLive forecast
Red Flag Warning
Red Flag Warning issued April 13 at 11:02AM MDT until April 13 at 9:00PM MDT by NWS Rapid City SD
Red Flag Warning
Red Flag Warning issued April 13 at 11:02AM MDT until April 13 at 9:00PM MDT by NWS Rapid City SD
Destination
Box Elder, SD
Evening
in Box Elder on Saturday
Local time
7:08 PM
MDT
Current temp
39°F
Partly Cloudy
W 6 to 18 mph8% chanceLive forecast
Red Flag Warning
Red Flag Warning issued April 13 at 11:02AM MDT until April 13 at 9:00PM MDT by NWS Rapid City SD
Red Flag Warning
Red Flag Warning issued April 13 at 11:02AM MDT until April 13 at 9:00PM MDT by NWS Rapid City 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
8 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 35m 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.
Badlands National Park
National Park
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 276.7
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...
25 mi from route
~62 min detour
Free
near mile 321
Park data from the National Park Service API. Alerts update every 2 hours.
More Details
What kind of drive is this?
Expect a highway-focused drive, as 99% of your journey will be spent on high-speed roads. You will settle into a rhythm quickly, especially during the longest uninterrupted stretch of 264.4 miles spent entirely on I-90. While the initial segments involve state highways, the transition to the interstate defines the bulk of your time behind the wheel. The route is designed for efficiency rather than technical maneuvering, allowing you to maintain a consistent speed for most of the trip. You will find that the road's personality is primarily functional, prioritizing direct transit across the South Dakota plains.
99% highway — fuel and pacing are the main things to plan.
17 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 264.4 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 35m drive. You will face about 11 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
2,906 ft1,333 ft
Total Climb
1,599 ft
Total Descent
115 ft
Highest Point
2,906 ft
~298 mi in
Elevation Range
1,573 ft
Who Is This Route For?
Weekend Trip
Doable as a same-day drive at 5h 35m. Total distance: 321 miles.
Family Friendly
Moderate complexity with 1 natural rest stops along the way.
The longest stretch is about 264.4 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 — Badlands National Park and Mount Rushmore National Memorial. See the National Parks section for detour distances and tips on detours.
Not recommended in a single day. At 5.6 hours each way, a round trip means 11.2 hours of driving — that is an unsafe level of fatigue for most drivers. Plan at least one night at Box Elder, SD before the return drive.
