This 352.9-mile journey from Watertown, SD, to Box Elder, SD, is best tackled in a single day, taking approximately 5 hours and 50 minutes. Expect a fuel cost of around $54 for this trip. The route primarily utilizes local roads, including 9th Avenue Southwest and Highway 212, with a short segment on 4th Street. Given its 'turn-heavy local drive' profile and originating and ending within the Great Plains region, this drive offers a straightforward, no-frills passage through South Dakota. It's a practical choice for those looking for a direct connection between these two points without extensive highway time.
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
198.4 miles from Watertown, SD
A natural place for your longest stop of the day
, about 3h 36m into the drive
.
Main Roads
Road
Distance
Duration
I 90
282.4 mi
4h 24m
SD Highway 25
83.6 mi
1h 38m
US Highway 212
14.5 mi
18m
9th Avenue Southwest
6.4 mi
8m
SD Highway 34
6 mi
7m
4th Street
1 mi
1m
Highway 1416
0.9 mi
1m
South Broadway
0.7 mi
1m
Longest stretch:
I 90
— 282.4 mi, about 4h 24m
Traffic on I-90
Hour-of-day weekday pattern from 19 FHWA count stations on your route.
Peak
2 PM
~319 veh/hr typical
· worst 563
Quietest
2 AM
~22 veh/hr
Peak-to-quiet ratio
14.5×
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 Watertown, SD and Box Elder, SD.
1
Start on South Broadway
0.7 mi·1 min·South Broadway
2
Turn right onto US 212
6.4 mi·8 min·9th Avenue Southwest
3
Continue on US 212
11 mi·12 min·US Highway 212
4
Continue on US 212
1.0 mi·1 min·4th Street
5
Continue on US 212
3.9 mi·5 min·US Highway 212
6
Turn left onto SD 25
60 mi·1 hr 10 min·SD Highway 25
7
Turn right onto SD 25; SD 34
6.0 mi·7 min·SD Highway 34
8
Turn left onto SD 25
24 mi·27 min·SD Highway 25
9
Take the ramp
0.3 mi·43 sec
10
Merge onto I 90
282 mi·4 hr 24 min·I 90
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
Starting your drive from Watertown, SD, to Box Elder, SD, early in the morning can help you avoid any potential local traffic and make the most of your 5-hour, 50-minute travel time. With only one stop recommended, you have flexibility in how you pace your journey. Keep an eye on your fuel gauge, as the estimated cost is $54. A specific tip for this route: since it's a 'turn-heavy local drive,' ensure your GPS is set to avoid highways and that you're comfortable with navigating city streets and state routes, as you'll be on them for the full 352.9 miles.
Morning Departure
Start early — leave by 6-7 AM to arrive at a reasonable hour.
Evening Departure
This is a long drive — plan for a morning departure or consider splitting it into two days.
You can normally do this drive in one day.
Plan roughly 1 meaningful break for fuel, food, and rest.
The halfway point lands around 198.4 miles from Watertown, SD, or about 3h 36m into the drive.
The longest continuous stretch on this route runs about 282.4 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 87 miles or 1h 45m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 198.4 miles or 3h 36m in
This is the best place for your longest stop, a real meal, and a full fuel check.
Final approach
Final hour starts around 5h 46m
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 Watertown, 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 Watertown, SD
This is one driving day of about 396.9 miles and 6h 44m.
Your first comfortable stop window is around 87 miles from Watertown, 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 282.4 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 12
5 decision points cluster between mile 22.6 and 396.9 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
4
22.6 mi into trip|~30m in|SD 25 / SD Highway 25
Turn left onto SD 25 / SD Highway 25
Navigation decision point
4
88.7 mi into trip|~1h 47m in|SD 25 / SD Highway 25
Turn left onto SD 25 / SD Highway 25
Navigation decision point
5
395 mi into trip|~6h 40m 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
4
395.3 mi into trip|~6h 41m in
Keep slight left at fork
Highway fork - watch signs carefully
5
396.9 mi into trip|~6h 44m in|Front Street
Turn right onto Front Street
Navigation decision point
Fuel & Cost
Regular Gas
$58.61 one way
$117.23 round trip
$3.75/gal25.4 MPG avg139 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$4.14
$64.71
$129.41
premium
$4.72
$73.69
$147.38
diesel
$4.80
$74.94
$149.88
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$59
Meals
$25–$50
Total
$84–$109
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 138.9 kg one way.
Prices: EIA weekly data, 2026-07-13.
Driving Electric?
About $42 in charging
· 1 stop
· 67% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
119.1
1
$41.67
$19.05
Efficient EV
99.2
1
$34.73
$15.88
EV Truck/SUV
158.8
1
$55.57
$25.40
Gas CO2
139 kg
EV CO2
46 kg (67% 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
Watertown, SD
Evening
in Watertown on Saturday
Local time
8:15 PM
CDT
Current temp
72°F
Mostly Clear
SSE 10 mph0% chanceLive forecast
Heat Advisory
Heat Advisory issued July 16 at 7:09PM MDT until July 19 at 9:00PM MDT by NWS Rapid City SD
Destination
Box Elder, SD
Evening
in Box Elder on Saturday
Local time
7:15 PM
MDT
Current temp
69°F
Partly Cloudy
W 8 mph7% chanceLive forecast
Heat Advisory
Heat Advisory issued July 16 at 7:09PM MDT until July 19 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
3 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
6h 44m on the road
Start early — leave by 6-7 AM to arrive at a reasonable hour.
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...
25 mi from route
~62 min detour
$30
near mile 355.8
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 396.9
Park data from the National Park Service API. Alerts update every 2 hours.
More Details
What kind of drive is this?
Prepare for a driving experience characterized by frequent turns and local road navigation, as indicated by its 'turn-heavy local drive' profile. With a highway share of 0%, you'll be navigating a network of surface streets and state highways for the entire 352.9 miles. There isn't a 'longest stretch' noted, suggesting a continuous series of maneuvers and changes in direction rather than long, uninterrupted segments. This means staying alert and engaged with your surroundings will be key throughout the 5-hour and 50-minute drive.
98% 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: 282.4 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 25. There are only a few real navigation decisions along the way. The trickiest moment comes around 22.6 miles in near SD 25 / SD Highway 25.
Driving Effort3/10
Easy - simple navigation with a manageable amount of wheel time
Balances navigation complexity with total wheel time.
The route itself is not hard, but at 6h 44m, endurance matters. Plan breaks every 2-3 hours. The 12 decision points are all manageable with basic attention.
Where does it get tricky?
The main spots that need attention: at 22.6 miles (SD 25 / SD Highway 25): Navigation decision point; at 88.7 miles (SD 25 / SD Highway 25): Navigation decision point; at 395 miles: Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one.
The longest stretch is about 282.4 miles on I 90. The full list of main roads is in the Roads section above.
Yes — we found about 17 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.
It helps. This is a long drive, so arriving tired and in the dark compounds. If the last hour of the trip is on surface roads or mountain grades, aim to arrive at Box Elder, SD before sunset when you can. Check the Trip Plan for departure windows that land you in daylight.
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 17 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 22.6 miles (SD 25 / SD Highway 25): Navigation decision point; at 88.7 miles (SD 25 / SD Highway 25): Navigation decision point; at 395 miles: Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one.
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 6.7 hours each way, a round trip means 13.5 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.
