Belle Fourche to Yankton is 416.8 miles and takes about 6h 55m via I 90, US Highway 81, and SD Highway 34, with a fuel budget near $63 and enough daylight to finish in a day. This trip stays within the Great Plains region of South Dakota for its entirety. You'll spend most of your time on major highways, making for a straightforward drive. Consider this route if you're looking for an efficient way to cross the state without many detours.
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
208.4 miles from Belle Fourche, SD
A natural place for your longest stop of the day
, about 3h 26m into the drive
.
Main Roads
Road
Distance
Duration
I 90
329.6 mi
5h 13m
US Highway 81
51.5 mi
58m
SD Highway 34
17.5 mi
21m
SD 34
10.7 mi
10m
Broadway Avenue
4.6 mi
5m
5th Avenue
1.7 mi
3m
291st Street
0.8 mi
<1m
State Street
<0.1 mi
<1m
Longest stretch:
I 90
— 329.6 mi, about 5h 13m
Traffic on I-90
Hour-of-day weekday pattern from 74 FHWA count stations on your route.
Peak
4 PM
~625 veh/hr typical
· worst 979
Quietest
2 AM
~28 veh/hr
Peak-to-quiet ratio
22.3×
busier at peak than in the quiet hours
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Averaged across 103 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 Belle Fourche, SD and Yankton, SD.
1
Start on 6th Avenue
27 ft·6 sec·6th Avenue
2
Turn left onto US 212 Business
384 ft·20 sec·State Street
3
Turn left onto US 85
1.7 mi·3 min·5th Avenue
4
Turn left onto SD 34
18 mi·21 min·SD Highway 34
5
Take the ramp onto SD 34
11 mi·10 min·SD 34
6
Continue on I 90; US 14; SD 79
24 mi·24 min·I 90; US 14; SD 79
7
Continue on I 90; US 14; US 16 Truck; SD 79
306 mi·4 hr 48 min·I 90; US 14; US 16 Truck; SD 79
8
Take the exit
0.4 mi·49 sec
Toward US 81: Salem, Yankton
9
Turn right onto US 81
36 mi·40 min·US Highway 81
10
Continue on US 81
0.8 mi·55 sec·291st Street
11
Continue on US 81
16 mi·17 min·US Highway 81
12
Continue on US 81
4.6 mi·5 min·Broadway Avenue
13
Turn right onto SD 52
48 ft·0 sec·West 4th Street
14
Arrive at destination
SD 52
Trip Plan
With a total duration of under 7 hours, this route is easily manageable in a single day. To make the most of your drive, aim for an early morning departure from Belle Fourche to avoid any potential afternoon traffic. The longest stretch on I 90 is over 300 miles, so plan for at least one substantial stop for fuel and a break before you transition to US Highway 81 and SD Highway 34. Keep an eye on your fuel gauge, especially as you approach Yankton, as services might become less frequent on the latter parts of the route.
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 208.4 miles from Belle Fourche, SD, or about 3h 26m into the drive.
The longest continuous stretch on this route runs about 329.6 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 92 miles or 1h 36m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 208.4 miles or 3h 26m 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 Yankton, SD than in the middle of the route.
Before You Leave
+
Open the route before leaving Belle Fourche, 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 Belle Fourche, SD
This is one driving day of about 416.8 miles and 6h 55m.
Your first comfortable stop window is around 92 miles from Belle Fourche, 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 329.6 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 7
5 decision points cluster between mile 0 and 416.8 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
5
0 mi into trip|~0m in|US 212 Business / State Street
Turn left onto US 212 Business / State Street
Navigation decision point
4
0.1 mi into trip|~0m in|US 85 / 5th Avenue
Turn left onto US 85 / 5th Avenue
Navigation decision point
3
1.7 mi into trip|~4m in|SD 34 / SD Highway 34
Turn left onto SD 34 / SD Highway 34
Navigation decision point
5
359.5 mi into trip|~5h 49m in
Take the exit toward US 81: Salem, Yankton
Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one
Toward US 81: Salem, Yankton
4
416.8 mi into trip|~6h 55m in|SD 52 / West 4th Street
Turn right onto SD 52 / West 4th Street
Navigation decision point
Fuel & Cost
Regular Gas
$69.53 one way
$139.05 round trip
$4.24/gal25.4 MPG avg146 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$4.61
$75.57
$151.13
premium
$5.26
$86.30
$172.59
diesel
$6.18
$101.39
$202.79
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$70
Meals
$25–$50
Total
$95–$120
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 145.8 kg one way.
Prices: EIA weekly data, 2026-10-12.
Driving Electric?
About $44 in charging
· 1 stop
· 66% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
125
1
$43.76
$20.01
Efficient EV
104.2
1
$36.47
$16.67
EV Truck/SUV
166.7
2
$58.35
$26.68
Gas CO2
146 kg
EV CO2
49 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 Oct 19, 2026
Origin
Belle Fourche, SD
Morning
in Belle Fourche on Tuesday
Local time
9:00 AM
MDT
Current temp
37°F
Clear
E 9 mph0% chanceLive forecast
Destination
Yankton, SD
Morning
in Yankton on Tuesday
Local time
10:00 AM
CDT
Current temp
42°F
Mostly Cloudy
ESE 5 mph0% chanceLive 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
5 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
6h 55m 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.
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...
21 mi from route
~53 min detour
Free
near mile 57.5
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...
Park data from the National Park Service API. Alerts update every 2 hours.
More Details
What kind of drive is this?
This drive is predominantly highway, with 98% of the 416.8 miles on major roads like I 90. You'll encounter the longest continuous stretch at 329.6 miles on I 90, meaning you can settle in for some consistent cruising. Surface roads will likely begin closer to your destination in Yankton, offering a change of pace after extensive highway travel. Expect a steady flow of traffic and frequent exit opportunities along the interstate portion.
98% highway — fuel and pacing are the main things to plan.
14 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 329.6 mi on I 90.
How Hard Is This Drive?
4/10
This is a straightforward highway drive that stays mostly on I 90 and US Highway 81. There are only a few real navigation decisions along the way. The trickiest moment comes early in the drive near US 212 Business / State Street.
Driving Effort4/10
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 55m, endurance matters. Plan breaks every 2-3 hours. The 7 decision points are all manageable with basic attention.
Where does it get tricky?
The main spots that need attention: near the start (US 212 Business / State Street): Navigation decision point; at 0.1 miles (US 85 / 5th Avenue): Navigation decision point; at 1.7 miles (SD 34 / SD Highway 34): Navigation decision point.
Belle Fourche (pronounced behl FOOSH) is a city in the Badlands and Black Hills region of South Dakota. It is the closest settlement to the geographic center of all 50 states of the United States (the geographic center of the 48 contiguous states is in Lebanon, Kansas).
Top landmarks
•Butte County Courthouse and Historic Jail Building — historic site in Belle Fourche, South Dakota
•First Congregational United Church of Christ — church building in Belle Fourche, South Dakota
The longest stretch is about 329.6 miles on I 90. The full list of main roads is in the Roads section above.
Yes — we found about 25 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 Yankton, 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 25 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: near the start (US 212 Business / State Street): Navigation decision point; at 0.1 miles (US 85 / 5th Avenue): Navigation decision point; at 1.7 miles (SD 34 / SD Highway 34): 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 6.9 hours each way, a round trip means 13.8 hours of driving — that is an unsafe level of fatigue for most drivers. Plan at least one night at Yankton, SD before the return drive.
