How far is Denison, IA from Sioux City, IA?
The driving distance from Denison, IA to Sioux City, IA is about 76.7 miles (123.4 km), with a travel time of about 01h 25m by car.
- The straight-line flight distance is about 62.9 miles (101.3 km).
- For a round trip, plan for roughly 02h 50m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 8:00 AM to 10:00 AM CDT.
Reverse, save, or send this route
This route works well as a day trip with time at the destination. Copy the route link, send it to another device, or print a clean version before you head out.
This route works well as a day trip with time at the destination.
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 01h 25m.
A morning start gives you useful time at the destination and keeps the return out of the late evening.
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.
Human settlement in Woodbury County, Iowa, United States of America
Route Weather Snapshot
Check the forecast at both ends before you head out.
Slight Chance Snow Showers
Driving Route Map
The map below follows the saved road route between Denison and Sioux City.
Turn-by-Turn Driving Directions
Step-by-step road directions between Denison and Sioux City.
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1
Start on North Main Street
10 m · 7 sec · North Main Street
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2
Turn left onto 1st Avenue North
75 m · 11 sec · 1st Avenue North
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3
Turn right onto Avenue C
1.1 km · 2 min · Avenue C
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4
Turn left onto State Highway 39
969 ft · 18 sec · State Highway 39
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5
Turn right onto George P. Soumas Memorial Highway
6 mi · 8 min · George P. Soumas Memorial Highway
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6
Continue on 220th Street
5.7 mi · 8 min · 220th Street
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7
Turn left onto D Avenue
11.9 mi · 16 min · D Avenue
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8
Continue on County Highway E16
5.8 mi · 8 min · County Highway E16
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9
Continue on Sioux Street
2781 ft · 2 min · Sioux Street
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10
Turn right onto North 4th Street
2263 ft · 46 sec · North 4th Street
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11
Continue on George P. Soumas Memorial Highway
7.8 mi · 11 min · George P. Soumas Memorial Highway
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12
Continue on East Main Street
1.3 km · 1 min · East Main Street
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13
Continue on George P. Soumas Memorial Highway
8.2 mi · 11 min · George P. Soumas Memorial Highway
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14
Continue on Billings Street
2063 ft · 32 sec · Billings Street
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15
Continue on George P. Soumas Memorial Highway
7 mi · 10 min · George P. Soumas Memorial Highway
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16
Take the ramp slight right
1698 ft · 41 sec
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17
Merge slight left
19.4 mi · 21 min
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18
Take the exit slight right toward Floyd Boulevard, Virginia Street
1582 ft · 43 sec
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19
Turn right onto South Floyd Boulevard
3174 ft · 1 min · South Floyd Boulevard
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20
Turn left onto 5th Street
121 m · 15 sec · 5th Street
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21
Turn right onto Iowa Street
105 m · 7 sec · Iowa Street
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22
Keep slight left to continue on 6th Street
130 m · 17 sec · 6th Street
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23
Turn right onto Court Street
1199 ft · 39 sec · Court Street
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24
Turn left onto 9th Street
990 ft · 46 sec · 9th Street
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25
Turn right
35 m · 9 sec
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26
Arrive at your destination
0 m · 1 sec
Car Route Details
A richer read on the saved driving route between Denison 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.
George P. Soumas Memorial Highway
Merge slight left
19.4 mi · 00h 21m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
A comfortable day-trip route
This route works well as a day trip. You can leave in the morning, spend meaningful time at the destination, and still return the same day.
Sunny leaving Denison and Slight Chance Snow Showers near Sioux City.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Denison to Sioux City?
The road trip is about 76.7 miles (123.4 km) and usually takes 01h 25m in normal driving conditions.
Is this a same-day trip or an overnight route?
This route works well as a day trip. You can leave in the morning, spend meaningful time at the destination, and still return the same day.
What is the halfway point on this route?
Smithland is a useful midpoint, sitting about 38.3 miles from Denison and 38.4 miles from Sioux City.
How much longer is the road route than the straight-line distance?
The direct path is about 62.9 miles (101.3 km), while the road route adds roughly 13.8 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 8:00 AM to 10:00 AM CDT. If you want a more comfortable same-day return, try to leave by 3:40 PM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $10.22 one way or $20.44 round trip. Estimated CO2 is about 24.1 kg one way.
What should you check before leaving?
Before you leave, expect Sunny around Denison and Slight Chance Snow Showers near Sioux City.
Stop Ideas Near Smithland
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Smithland.
Omaha
Flight Path Map
This map shows the direct air route between Denison and Sioux City. Straight-line distance: 62.98 mi (101.35 km).
#1 Denison
City in Iowa, United States
| Population | 8,249 |
| Coordinates | 42.0177700, -95.3552800 |
| Altitude | 391 |
| 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: 123 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 02h 33m |
| 40 mph (64.37 km/h) | 01h 55m |
| 50 mph (80.47 km/h) | 01h 32m |
| 60 mph (96.56 km/h) | 01h 16m |
| 70 mph (112.65 km/h) | 01h 05m |
| 80 mph (129 km/h) | 00h 57m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.77 | $10.22 | $20.44 |
| Mid-grade | $4.25 | $11.53 | $23.05 |
| Premium | $4.65 | $12.61 | $25.22 |
| Diesel | $5.30 | $14.37 | $28.75 |
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 18, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.