How far is Sioux City, IA from Denison, IA?
The driving distance from Sioux City, IA to Denison, IA is about 77.1 miles (124 km), with a travel time of about 01h 45m by car.
- The straight-line flight distance is about 62.9 miles (101.3 km).
- For a round trip, plan for roughly 03h 31m 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 45m.
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
Sunny
Driving Route Map
The map below follows the saved road route between Sioux City and Denison.
Turn-by-Turn Driving Directions
Step-by-step road directions between Sioux City and Denison.
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1
Start on the route
35 m · 14 sec
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2
Turn left onto 9th Street
990 ft · 46 sec · 9th Street
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3
Turn right onto Court Street
1594 ft · 55 sec · Court Street
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4
Turn left onto 5th Street
794 ft · 29 sec · 5th Street
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5
Turn right onto Floyd Boulevard
1 km · 2 min · Floyd Boulevard
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6
Take the ramp left toward I 29 South
1588 ft · 39 sec
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7
Merge slight left
19.4 mi · 21 min
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8
Take the exit slight right
1351 ft · 33 sec
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9
Keep slight left
147 m · 10 sec
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10
Continue on George P. Soumas Memorial Highway
7.2 mi · 10 min · George P. Soumas Memorial Highway
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11
Continue on Billings Street
2063 ft · 32 sec · Billings Street
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12
Continue on George P. Soumas Memorial Highway
8.2 mi · 11 min · George P. Soumas Memorial Highway
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13
Continue on West Main Street
1.3 km · 1 min · West Main Street
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14
Continue on George P. Soumas Memorial Highway
7.8 mi · 11 min · George P. Soumas Memorial Highway
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15
Continue on North 4th Street
2263 ft · 51 sec · North 4th Street
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16
Turn left onto Sioux Street
2781 ft · 2 min · Sioux Street
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17
Continue on County Highway E16
5.8 mi · 8 min · County Highway E16
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18
Continue on D Avenue
11.9 mi · 16 min · D Avenue
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19
Turn right onto 220th Street
11.7 mi · 16 min · 220th Street
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20
Turn slight left
74 m · 11 sec
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21
Continue on State Highway 39
1069 ft · 25 sec · State Highway 39
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22
Turn right onto Avenue C
1.1 km · 2 min · Avenue C
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23
Turn left onto 1st Avenue North
75 m · 13 sec · 1st Avenue North
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24
Turn right onto North Main Street
10 m · 2 sec · North Main Street
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25
Arrive at your destination
0 m · 1 sec · North Main Street
Car Route Details
A richer read on the saved driving route between Sioux City and Denison.
Highway-focused drive
Most of the mileage stays on named highways, so the important moments are ramps, exits, merges, and the final local approach.
I 29 South
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.
Slight Chance Snow Showers leaving Sioux City and Sunny near Denison.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Sioux City to Denison?
The road trip is about 77.1 miles (124 km) and usually takes 01h 45m 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 38.5 miles from Sioux City and 38.6 miles from Denison.
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 14.2 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 2:58 PM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $10.26 one way or $20.51 round trip. Estimated CO2 is about 24.2 kg one way.
What should you check before leaving?
Before you leave, expect Slight Chance Snow Showers around Sioux City and Sunny near Denison.
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 Sioux City and Denison. Straight-line distance: 62.98 mi (101.35 km).
#1 Sioux City
The second most populous city in Iowa.
| Population | 82,651 |
| Coordinates | 42.4999900, -96.4003100 |
| Altitude | 366 |
| Country | United States |
#2 Denison
City in Iowa, United States
| Population | 8,249 |
| Coordinates | 42.0177700, -95.3552800 |
| Altitude | 391 |
| Country | United States |
End: Denison (-95.35528, 42.01777)
Estimated Travel Time
Distance: 124 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 17m |
| 70 mph (112.65 km/h) | 01h 06m |
| 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 | $10.26 | $20.51 |
| Mid-grade | $4.25 | $11.57 | $23.14 |
| Premium | $4.65 | $12.66 | $25.32 |
| Diesel | $5.30 | $14.43 | $28.85 |
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.