Lemmon, SD to Yankton, SD is 448.9 miles and takes about 8h 3m via I 90, with a fuel budget near $70 and likely requires an overnight stop. This drive primarily traverses the Great Plains region, offering a straightforward travel experience across South Dakota. With a recommended two days for completion, you'll have ample time to break up the nearly 9 hours of driving. It's a route best suited for those who appreciate wide-open landscapes and a focused approach to covering distance.
Trip Pace
Best split across 2 days
Treat the return leg as its own travel day rather than an afterthought.
Break Rhythm
2 planned breaks
Plan on a short reset every 3 to 4 hours to stay fresh behind the wheel.
Midpoint
224.4 miles from Lemmon, SD
A natural place for your longest stop of the day
, about 4h 17m into the drive
.
Main Roads
Road
Distance
Duration
I 90
150.4 mi
2h 21m
10th Street East
95.6 mi
1h 48m
US Highway 83
66.9 mi
1h 16m
US Highway 81
51.5 mi
58m
South US Highway 83
30.9 mi
35m
US Highway 12
22.1 mi
25m
US 14
16.4 mi
19m
Broadway Avenue
4.6 mi
5m
Longest stretch:
I 90
— 150.4 mi, about 2h 21m
Traffic on I-90
Hour-of-day weekday pattern from 13 FHWA count stations on your route.
Peak
2 PM
~350 veh/hr typical
· worst 593
Quietest
2 AM
~23 veh/hr
Peak-to-quiet ratio
15.2×
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 Lemmon, SD and Yankton, SD.
1
Start on Main Avenue
0.4 mi·1 min·Main Avenue
2
Turn left onto US 12; SD 73
96 mi·1 hr 48 min·10th Street East
3
Continue on US 12; SD 20
3.4 mi·3 min·West Grand Crossing
4
Continue on US 12; SD 20; SD 1804
19 mi·21 min·US Highway 12
5
Continue on US 12; US 83; SD 20
1.0 mi·1 min·Highway 12 & 83
6
Continue on US 12; US 83; SD 20
3.6 mi·4 min·US Highway 12
7
Turn right onto US 83; SD 20
31 mi·35 min·US Highway 83
8
Continue on US 83; US 212
36 mi·41 min·US Highway 83
9
Turn right onto US 14; US 83
16 mi·19 min·US 14; US 83
10
Continue on SD 1889
1.0 mi·1 min·North Euclid Avenue
11
Turn left onto SD 1889
0.1 mi·13 sec·South Pierre Street
12
Turn right onto US 14; US 83; SD 34
0.9 mi·1 min·West Sioux Avenue
13
Continue on US 14; US 83; SD 34
0.5 mi·35 sec·North Highway 83
14
Continue on US 83
0.7 mi·45 sec·North Deadwood Street
15
Continue on US 83; SD 1806
1.0 mi·1 min·North 1st Street
16
Continue on US 83; SD 1806
31 mi·35 min·South US Highway 83
17
Take the exit
0.3 mi·42 sec
18
Merge onto I 90
150 mi·2 hr 21 min·I 90
19
Take the exit
0.4 mi·49 sec
Toward US 81: Salem, Yankton
20
Turn right onto US 81
36 mi·40 min·US Highway 81
21
Continue on US 81
0.8 mi·55 sec·291st Street
22
Continue on US 81
16 mi·17 min·US Highway 81
23
Continue on US 81
4.6 mi·5 min·Broadway Avenue
24
Turn right onto SD 52
48 ft·0 sec·West 4th Street
25
Arrive at destination
SD 52
Trip Plan
Given the 8h 3m driving time and 448.9 miles, planning for two days is wise to avoid fatigue. Consider departing mid-morning on your first day to reach a comfortable stopping point after about half the distance. The longest stretch without a major town is over 150 miles on I 90, so ensure you have sufficient fuel before entering this section. Keep an eye on your fuel gauge, as services can be spread out in this region. A budget of around $70 for fuel should cover the trip.
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.
This drive is better paced as a 2-day trip.
Plan roughly 2 meaningful breaks for fuel, food, and rest.
The halfway point lands around 224.4 miles from Lemmon, SD, or about 4h 17m into the drive.
The longest continuous stretch on this route runs about 150.4 miles.
Consider an overnight stop or starting very early.
Departure
Before you leave
Start with fuel, water, and navigation already sorted so the first hour feels easy.
First stop
Around 99 miles or 1h 53m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 224.4 miles or 4h 17m in
This is the best place for your longest stop, a real meal, and a full fuel check.
Overnight split
Day 1 wrap after about 224.4 miles or 4h 17m
Stop before fatigue turns the last few hours into a grind. You want day two to start fresh, not just resumed.
Final approach
Final hour starts around 6h 55m
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 Lemmon, 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.
+
Pick one backup stop option before the midpoint in case traffic changes your pacing.
+
Treat this as a 2-day road trip and book the overnight stop before the busiest arrival window.
Day 1
Settle into the route from Lemmon, SD
Aim for roughly 224 miles and 4 hours of wheel time on this day.
Day 2
Finish the approach into Yankton, SD
Aim for roughly 224 miles and 4 hours of wheel time on this day.
Your first comfortable stop window is around 99 miles from Lemmon, SD.
This route usually feels better as a 2-day drive than as one long push.
Plan about 2 real breaks rather than only quick fuel stops.
The longest stretch is on I 90 for about 150.4 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 10
5 decision points cluster between mile 0.4 and 448.9 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
4
0.4 mi into trip|~1m in|US 12; SD 73 / 10th Street East
Turn left onto US 12; SD 73 / 10th Street East
Navigation decision point
4
206.9 mi into trip|~3h 57m in|US 14; US 83; SD 34 / West Sioux Avenue
Turn right onto US 14; US 83; SD 34 / West Sioux Avenue
Navigation decision point
4
240.9 mi into trip|~4h 36m in
Take the exit
Exit ramp - move to the correct lane early
5
391.6 mi into trip|~6h 57m 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
448.9 mi into trip|~8h 3m in|SD 52 / West 4th Street
Turn right onto SD 52 / West 4th Street
Navigation decision point
Fuel & Cost
Regular Gas
$74.63 one way
$149.27 round trip
$4.22/gal25.4 MPG avg157 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$4.60
$81.30
$162.59
premium
$5.18
$91.60
$183.20
diesel
$5.35
$94.55
$189.10
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$75
Hotel (1n)
$80–$140
Meals
$50–$100
Total
$205–$315
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 157.1 kg one way.
Prices: EIA weekly data, 2026-06-01.
Driving Electric?
About $47 in charging
· 1 stop
· 66% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
134.7
1
$47.13
$21.55
Efficient EV
112.2
1
$39.28
$17.96
EV Truck/SUV
179.6
2
$62.85
$28.73
Gas CO2
157 kg
EV CO2
53 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 Jun 1, 2026
Origin
Lemmon, SD
Afternoon
in Lemmon on Wednesday
Local time
1:11 PM
MDT
Current temp
46°F
Partly Cloudy
W 10 mph1% chanceLive forecast
Flood Warning
Flood Warning issued May 31 at 10:28PM CDT until June 1 at 9:45AM CDT by NWS Aberdeen SD
Destination
Yankton, SD
Afternoon
in Yankton on Wednesday
Local time
2:11 PM
CDT
Current temp
57°F
Mostly Clear
SSW 5 mph4% chanceLive forecast
Flood Warning
Flood Warning issued May 31 at 10:28PM CDT until June 1 at 9:45AM CDT by NWS Aberdeen 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.
For long drives, weather on day two can matter just as much as conditions at departure, so check the whole travel window rather than only the first day.
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
11 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
8h 3m on the road
This is long enough that the arrival forecast matters almost as much as departure conditions. Recheck both ends before you roll.
Weather data from the National Weather Service. Conditions may change; check closer to your travel date.
More Details
What kind of drive is this?
This trip is largely highway driving, with 76% of the route on major roads like I 90. You'll encounter a longest stretch of 150.4 miles on I 90, indicating extended periods of rural cruising. The transition to surface roads will happen after this significant highway segment. Expect frequent exits and entrances as you navigate these main thoroughfares, especially on I 90.
76% highway — fuel and pacing are the main things to plan.
25 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 150.4 mi on I 90.
How Hard Is This Drive?
4/10
This is a straightforward highway drive that stays mostly on I 90 and 10th Street East. There are only a few real navigation decisions along the way. The trickiest moment comes around 0.4 miles in near US 12; SD 73 / 10th Street East.
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 8h 3m, endurance matters. Plan breaks every 2-3 hours. The 10 decision points are all manageable with basic attention.
Where does it get tricky?
The main spots that need attention: at 0.4 miles (US 12; SD 73 / 10th Street East): Navigation decision point; at 206.9 miles (US 14; US 83; SD 34 / West Sioux Avenue): Navigation decision point; at 240.9 miles: Exit ramp - move to the correct lane early.
The longest stretch is about 150.4 miles on I 90. The full list of main roads is in the Roads section above.
Yes — a 2-day pace is more comfortable than one long haul. A sensible stopping point is after roughly 224 miles on day one.
Yes — we found about 12 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 2 meaningful breaks. There are 12 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 0.4 miles (US 12; SD 73 / 10th Street East): Navigation decision point; at 206.9 miles (US 14; US 83; SD 34 / West Sioux Avenue): Navigation decision point; at 240.9 miles: Exit ramp - move to the correct lane early.
Not recommended in a single day. At 8.1 hours each way, a round trip means 16.1 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.
