How far is Sioux City, IA from Dubuque, IA?
The driving distance from Sioux City, IA to Dubuque, IA is about 300.9 miles (484.2 km), with a travel time of about 04h 42m by car.
- The straight-line flight distance is about 292.1 miles (470.1 km).
- For a round trip, plan for roughly 09h 25m 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 42m.
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 Hamilton County, Iowa, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Partly Sunny then Chance Showers And Thunderstorms
Mostly Cloudy
Driving Route Map
The map below follows the saved road route between Sioux City and Dubuque.
Turn-by-Turn Driving Directions
Step-by-step road directions between Sioux City and Dubuque.
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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
767 ft · 27 sec · Court Street
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4
Turn left onto 7th Street
122 m · 19 sec · 7th Street
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5
Turn right onto Iowa Street
129 m · 24 sec · Iowa Street
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6
Turn left onto 6th Street
1.4 km · 2 min · 6th Street
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7
Continue on Fairmount Street
3030 ft · 1 min · Fairmount Street
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8
Turn left onto Gordon Drive
3.4 mi · 7 min · Gordon Drive
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9
Continue on Highway 20
39.4 mi · 47 min · Highway 20
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10
Continue on United States Highway 20
8.3 mi · 10 min · United States Highway 20
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11
Continue on 220th Street
165.9 mi · 3 hr 11 min · 220th Street
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12
Keep slight left
81.4 mi · 1 hr 37 min
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13
Turn left onto South Locust Street
553 ft · 18 sec · South Locust Street
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14
Turn straight onto IA 946
708 ft · 21 sec
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15
At the end of the road, turn left
128 m · 13 sec
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16
Take the exit slight right toward White Street, Port of Dubuque
1432 ft · 32 sec
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17
Continue on White Street
638 ft · 27 sec · White Street
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18
Turn left onto East 7th Street
87 m · 20 sec · East 7th Street
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19
Turn left onto Central Avenue
10 m · 1 sec · Central Avenue
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20
Arrive at your destination
0 m · 1 sec · Central Avenue
Car Route Details
A richer read on the saved driving route between Sioux City and Dubuque.
Long-distance drive
This route is long enough that fuel, rest stops, weather, and timing matter more than any single maneuver.
220th Street
Continue on 220th Street
166 mi · 03h 11m
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.
Partly Sunny then Chance Showers And Thunderstorms leaving Sioux City and Mostly Cloudy near Dubuque.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Sioux City to Dubuque?
The road trip is about 300.9 miles (484.2 km) and usually takes 04h 42m 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?
Williams is a useful midpoint, sitting about 150.2 miles from Sioux City and 150.7 miles from Dubuque.
How much longer is the road route than the straight-line distance?
The direct path is about 292.1 miles (470.1 km), while the road route adds roughly 8.8 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 6:00 AM to 8:00 AM CDT. If you want a more comfortable same-day return, try to leave by 7:34 AM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $40.05 one way or $80.10 round trip. Estimated CO2 is about 94.4 kg one way.
What should you check before leaving?
Before you leave, expect Partly Sunny then Chance Showers And Thunderstorms around Sioux City and Mostly Cloudy near Dubuque.
Flight Path Map
This map shows the direct air route between Sioux City and Dubuque. Straight-line distance: 292.13 mi (470.13 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 Dubuque
The most populous city in Dubuque County, Iowa.
| Population | 57,781 |
| Coordinates | 42.5005600, -90.6645700 |
| Altitude | 189 |
| Country | United States |
End: Central Avenue (-90.664595, 42.500561)
Estimated Travel Time
Distance: 484 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 10h 01m |
| 40 mph (64.37 km/h) | 07h 31m |
| 50 mph (80.47 km/h) | 06h 01m |
| 60 mph (96.56 km/h) | 05h 00m |
| 70 mph (112.65 km/h) | 04h 17m |
| 80 mph (129 km/h) | 03h 45m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.77 | $40.05 | $80.10 |
| Mid-grade | $4.25 | $45.17 | $90.33 |
| Premium | $4.65 | $49.43 | $98.85 |
| Diesel | $5.30 | $56.33 | $112.66 |
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 · May 30, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.