Connecting Watertown to Sioux Falls is a straightforward 105.8-mile journey across the Great Plains of South Dakota. You can easily complete this drive in about 1 hour and 46 minutes, making it an ideal day trip that requires no overnight stops. Budgeting approximately $16 for fuel is a safe estimate for your transit between these two cities. Because you will be traveling through a consistent regional landscape, the trip is efficient and simple to navigate. Whether you are heading south for business or leisure, the lack of required stops allows for a very flexible schedule.
Trip Pace
Same-day drive is realistic
A same-day return is realistic if you keep stops short.
Midpoint
52.9 miles from Watertown, SD
A natural place for your longest stop of the day
, about 53m into the drive
.
Main Roads
Road
Distance
Duration
I 29
93.5 mi
1h 27m
I 90
3.7 mi
4m
I 229
3.6 mi
4m
1st Avenue Northeast
1.4 mi
2m
Willow Creek Drive Southeast
1.1 mi
2m
9th Avenue Southeast
0.5 mi
<1m
I 229 Business
0.4 mi
<1m
East 8th Street
0.2 mi
<1m
Longest stretch:
I 29
— 93.5 mi, about 1h 27m
Turn-by-Turn Driving Directions
Step-by-step road directions between Watertown, SD and Sioux Falls, SD.
1
Start on South Broadway
0.2 mi·30 sec·South Broadway
2
Turn right onto 1st Avenue Northeast
1.4 mi·2 min·1st Avenue Northeast
Use the straight lane.
3
Continue on Willow Creek Drive Southeast
1.1 mi·2 min·Willow Creek Drive Southeast
Use the straight lane.
4
Turn left onto US 212
0.5 mi·49 sec·9th Avenue Southeast
Use the straight lane.
5
Take the ramp
0.3 mi·38 sec
Toward I-29: Brookings
6
Merge onto I 29
94 mi·1 hr 27 min·I 29
7
Take the exit
0.2 mi·30 sec
Toward Interstate 90 East: Albert Lea
8
Merge onto I 90
3.7 mi·4 min·I 90
9
Take the exit
0.5 mi·33 sec
Exit 400Toward I 229 SouthUse the slight right lane.
10
Merge onto I 229
3.6 mi·4 min·I 229
11
Take the exit onto I 229 Business
0.2 mi·32 sec·I 229 Business
Exit 6Toward 10th Street, DowntownUse the slight right lane.
12
Keep slight right at fork onto I 229 Business
0.1 mi·20 sec·I 229 Business
Toward SD 42: Downtown, Washington PavilionUse the slight right lane.
13
Turn right onto South Lowell Avenue
0.1 mi·22 sec·South Lowell Avenue
14
Turn left onto East 8th Street
0.2 mi·29 sec·East 8th Street
15
Turn right onto North Chicago Avenue
0.1 mi·23 sec·North Chicago Avenue
16
Arrive at destination
North Chicago Avenue
Trip Plan
Since this is a relatively short trip, you have the advantage of choosing your departure time based on your personal preference rather than endurance. With no mandatory stops required for a 105.8-mile haul, you can comfortably make the drive in one go. Keep an eye on your fuel levels before leaving Watertown, as the majority of your time will be spent on the open interstate. If you are traveling during peak hours, be prepared for the transition onto I-229 as you approach the Sioux Falls area. Taking advantage of the route's simplicity allows you to plan your arrival with a high degree of certainty.
Morning Departure
Leave by 9 AM and you'll arrive before lunch.
Evening Departure
Even a 4 PM departure gets you there before dark in summer.
You can normally do this drive in one day.
You may only need one short stretch break if traffic stays light.
The halfway point lands around 52.9 miles from Watertown, SD, or about 53m into the drive.
The longest continuous stretch on this route runs about 93.5 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 23 miles or 25m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 52.9 miles or 53m in
This is the best place for your longest stop, a real meal, and a full fuel check.
Final approach
Final hour starts around 1h 24m
Traffic, exits, and arrival timing usually matter more near Sioux Falls, 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.
Day 1
Settle into the route from Watertown, SD
This is one driving day of about 105.8 miles and 1h 46m.
Your first comfortable stop window is around 23 miles from Watertown, SD.
This route can stay practical as a one-day drive if traffic stays reasonable.
The longest stretch is on I 29 for about 93.5 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 13
5 decision points cluster between mile 0.2 and 105.3 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
6
0.2 mi into trip|~0m in|1st Avenue Northeast
Turn right onto 1st Avenue Northeast
Lane positioning matters here
Use the straight lane.
6
2.7 mi into trip|~5m in|US 212 / 9th Avenue Southeast
Turn left onto US 212 / 9th Avenue Southeast
Lane positioning matters here
Use the straight lane.
7
101 mi into trip|~1h 39m in
Take the exit toward I 229 South
Exit ramp - move to the correct lane early. Lane positioning matters here
Use the slight right lane.
Exit 400
Toward I 229 South
8
105 mi into trip|~1h 44m in|I 229 Business
Take the exit onto I 229 Business toward 10th Street, Downtown
Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one
Use the slight right lane.
Exit 6
Toward 10th Street, Downtown
9
105.3 mi into trip|~1h 44m in|I 229 Business
Keep slight right at fork onto I 229 Business toward SD 42: Downtown, Washington Pavilion
Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one
Use the slight right lane.
Toward SD 42: Downtown, Washington Pavilion
Fuel & Cost
Regular Gas
$16.54 one way
$33.08 round trip
$3.97/gal25.4 MPG avg37 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$4.36
$18.16
$36.32
premium
$4.89
$20.36
$40.72
diesel
$5.61
$23.36
$46.72
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$17
Meals
$25–$50
Total
$42–$67
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 37 kg one way.
Prices: EIA weekly data, 2026-04-13.
Driving Electric?
About $11 in charging
· 0 stops
· 68% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
31.7
0
$11.11
$5.08
Efficient EV
26.5
0
$9.26
$4.23
EV Truck/SUV
42.3
0
$14.81
$6.77
Gas CO2
37 kg
EV CO2
12 kg (68% less)
This trip is well within single-charge range for most EVs. No charging stops needed if you start fully charged.
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 13, 2026
Origin
Watertown, SD
Night
in Watertown on Saturday
Local time
9:48 PM
CDT
Current temp
70°F
Unavailable
Live forecast
Destination
Sioux Falls, SD
Night
in Sioux Falls on Saturday
Local time
9:48 PM
CDT
Current temp
51°F
Partly Cloudy
SSE 0 to 5 mph2% chanceLive forecast
72°F
Medary, SD
53 mi in
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
Same local time
Origin and destination are on the same clock, so arrival timing is easier to judge at a glance.
Temperature spread
19 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
1h 46m on the road
The weather snapshot is not static. If you are leaving later, give both cities one more quick forecast check before departure.
Weather data from the National Weather Service. Conditions may change; check closer to your travel date.
More Details
What kind of drive is this?
Expect a highly efficient experience, as 96% of this route consists of highway driving. You will spend the vast majority of your time on I-29, which accounts for a 93.5-mile stretch of your journey. The road transitions briefly to I-90 and I-229 as you reach your destination, keeping the pace fast and the navigation simple. While it is a quintessential interstate grind, the high percentage of highway use ensures you cover the distance quickly. You can anticipate a steady, predictable flow behind the wheel from start to finish.
96% highway — fuel and pacing are the main things to plan.
16 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 93.5 mi on I 29.
How Hard Is This Drive?
8/10
This is a straightforward highway drive that stays mostly on I 29 and I 90. This route has several spots where lane changes, forks, or exits need your full attention. The trickiest moment comes around 0.2 miles in near 1st Avenue Northeast.
Driving Effort8/10
Demanding - plan breaks and stay ahead of the key maneuvers
Balances navigation complexity with total wheel time.
This drive requires moderate attention. Across 105.8 miles you will encounter 13 spots where lane choice or exit timing matters. Not difficult for experienced highway drivers, but worth previewing the tricky sections before you go.
Where does it get tricky?
The main spots that need attention: at 0.2 miles (1st Avenue Northeast): Lane positioning matters here; at 2.7 miles (US 212 / 9th Avenue Southeast): Lane positioning matters here; at 101 miles: Exit ramp - move to the correct lane early. Lane positioning matters here.
Sioux Falls is a city of about 184,000 (2019) in Southeast South Dakota. Founded in 1883 in what was then known as the Dakota Territory, Sioux Falls has grown from a sleepy Midwestern town into a resort for shopping and tourism in the northern Great Plains. It is widely recognized as the largest urban center between Minneapolis and Denver.
Doable as a same-day drive at 1h 46m. Total distance: 105.8 miles.
Family Friendly
Moderate complexity with 0 natural rest stops along the way.
Solo Traveler
1h 46m drive, comfortable solo distance.
First-Time Driver
Mostly highway driving (96%). Some complex stretches to watch for.
Frequently Asked Questions
The longest stretch is about 93.5 miles on I 29. The full list of main roads is in the Roads section above.
It helps. This route has a higher-than-average number of complex decision points, which get harder in the dark. If the last hour of the trip is on surface roads or mountain grades, aim to arrive at Sioux Falls, SD before sunset when you can. Check the Trip Plan for departure windows that land you in daylight.
Yes. At under 2 hours behind the wheel, this works well for families — plan one quick stop if you have younger kids.
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 0.2 miles (1st Avenue Northeast): Lane positioning matters here; at 2.7 miles (US 212 / 9th Avenue Southeast): Lane positioning matters here; at 101 miles: Exit ramp - move to the correct lane early. Lane positioning matters here.
Yes. A round trip is manageable in a single day if you plan a break at Sioux Falls, SD before heading back.
