How far is Marengo, IA from Sioux City, IA?
The driving distance from Marengo, IA to Sioux City, IA is about 262.7 miles (422.8 km), with a travel time of about 04h 15m by car.
- The straight-line flight distance is about 227 miles (365.3 km).
- For a round trip, plan for roughly 08h 30m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 6:00 AM to 8:00 AM CDT.
Reverse, save, or send this route
This drive is better planned with a longer stop or an overnight stay. Copy the route link, send it to another device, or print a clean version before you head out.
This drive is better planned with a longer stop or an overnight stay.
Flight Distance
Driving Distance
Gas Cost Calculator
Leave and Arrive Planner
Pick a departure time to see your estimated arrival and same-day return window.
Drive time stays fixed at 04h 15m.
An early departure helps you fit a real stop into the day without turning the return into a late-night drive.
You are leaving earlier than the recommended window, which gives you extra margin for breaks and traffic.
Halfway Point
A useful midpoint for breaks, coffee, or meeting in the middle.
City in Iowa
Route Weather Snapshot
Check the forecast at both ends before you head out.
Sunny
Driving Route Map
The map below follows the saved road route between Marengo and Sioux City.
Turn-by-Turn Driving Directions
Step-by-step road directions between Marengo and Sioux City.
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1
Start on the route
41 m · 12 sec
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2
Turn right onto West Marion Street
541 ft · 29 sec · West Marion Street
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3
Turn left onto Lafayette Avenue
85 m · 14 sec · Lafayette Avenue
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4
Turn right onto West South Street
1735 ft · 41 sec · West South Street
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5
Continue on 212th Boulevard
11.2 mi · 17 min · 212th Boulevard
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6
Turn right onto State Highway 21
1.4 mi · 2 min · State Highway 21
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7
Continue on 11th Avenue
1.5 mi · 2 min · 11th Avenue
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8
Continue on 7th Avenue
1.3 km · 1 min · 7th Avenue
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9
Turn left onto 13th Street
5.4 mi · 8 min · 13th Street
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10
Take the ramp left
1770 ft · 49 sec
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11
Merge slight left onto 73rd Street
786 ft · 10 sec · 73rd Street
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12
Continue on Lincoln Highway
65.7 mi · 1 hr 16 min · Lincoln Highway
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13
Take the exit slight right toward I 35 North: Minneapolis
2992 ft · 1 min
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14
Merge slight left
30.4 mi · 33 min
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15
Take the exit slight right toward US 20 West: Fort Dodge
1664 ft · 57 sec
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16
Merge slight left
145 mi · 2 hr 52 min
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17
Turn right onto South Fairmount Street
3033 ft · 1 min · South Fairmount Street
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18
Continue on 6th Street
1.5 km · 2 min · 6th Street
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19
Turn right onto Court Street
1199 ft · 39 sec · Court Street
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20
Turn left onto 9th Street
990 ft · 46 sec · 9th Street
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21
Turn right
35 m · 9 sec
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22
Arrive at your destination
0 m · 1 sec
Car Route Details
A richer read on the saved driving route between Marengo and Sioux City.
Highway-focused drive
Most of the mileage stays on named highways, so the important moments are ramps, exits, merges, and the final local approach.
US 20 West
Merge slight left
145 mi · 02h 52m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
A longer out-and-back drive
This is still possible in one day, but it becomes a long driving day. Leaving early and planning your stop window matters more here.
Sunny leaving Marengo and Sunny near Sioux City.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Marengo to Sioux City?
The road trip is about 262.7 miles (422.8 km) and usually takes 04h 15m in normal driving conditions.
Is this a same-day trip or an overnight route?
This is still possible in one day, but it becomes a long driving day. Leaving early and planning your stop window matters more here.
What is the halfway point on this route?
Webster City is a useful midpoint, sitting about 132.4 miles from Marengo and 130.4 miles from Sioux City.
How much longer is the road route than the straight-line distance?
The direct path is about 227 miles (365.3 km), while the road route adds roughly 35.7 extra miles because roads do not follow the straight air line.
When is the best time to leave for this route?
A good departure window is usually 6:00 AM to 8:00 AM CDT. If you want a more comfortable same-day return, try to leave by 8:30 AM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $34.96 one way or $69.91 round trip. Estimated CO2 is about 82.4 kg one way.
What should you check before leaving?
Before you leave, expect Sunny around Marengo and Sunny near Sioux City.
Flight Path Map
This map shows the direct air route between Marengo and Sioux City. Straight-line distance: 227 mi (365.32 km).
#1 Marengo
Town and county of Iowa County, Iowa, United States
| Population | 2,466 |
| Coordinates | 41.7980600, -92.0707400 |
| Altitude | 225 |
| Country | United States |
#2 Sioux City
The second most populous city in Iowa.
| Population | 82,651 |
| Coordinates | 42.4999900, -96.4003100 |
| Altitude | 366 |
| Country | United States |
End: (-96.400135, 42.499991)
Estimated Travel Time
Distance: 423 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 08h 45m |
| 40 mph (64.37 km/h) | 06h 34m |
| 50 mph (80.47 km/h) | 05h 15m |
| 60 mph (96.56 km/h) | 04h 22m |
| 70 mph (112.65 km/h) | 03h 45m |
| 80 mph (129 km/h) | 03h 16m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.77 | $34.96 | $69.91 |
| Mid-grade | $4.25 | $39.43 | $78.85 |
| Premium | $4.65 | $43.14 | $86.29 |
| Diesel | $5.30 | $49.17 | $98.34 |
Assumes 8.3 L/100 km (about 28.3 MPG). CO2 is an estimate and varies by vehicle, fuel blend, traffic, and terrain.
Prices in Iowa · Apr 19, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.