How far is Humboldt, IA from Dubuque, IA?
The driving distance from Humboldt, IA to Dubuque, IA is about 205.9 miles (331.4 km), with a travel time of about 03h 22m by car.
- The straight-line flight distance is about 181.2 miles (291.6 km).
- For a round trip, plan for roughly 06h 45m 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 03h 22m.
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, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Patchy Fog then Mostly Sunny
Driving Route Map
The map below follows the saved road route between Humboldt and Dubuque.
Turn-by-Turn Driving Directions
Step-by-step road directions between Humboldt and Dubuque.
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1
Start on the route
65 m · 18 sec
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2
Turn right onto South 6th Street
64 m · 15 sec · South 6th Street
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3
Turn left onto Sumner Avenue
1.1 km · 1 min · Sumner Avenue
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4
Turn right onto 4th Avenue Southwest
155 m · 16 sec · 4th Avenue Southwest
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5
Turn left onto 13th Street South
1.6 km · 2 min · 13th Street South
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6
Continue on Lincoln Avenue
18.5 mi · 26 min · Lincoln Avenue
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7
Turn left onto US 20 East
2190 ft · 1 min
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8
Merge slight left
103.2 mi · 1 hr 59 min
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9
Keep slight left
81.4 mi · 1 hr 37 min
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10
Turn left onto South Locust Street
553 ft · 18 sec · South Locust Street
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11
Turn straight onto IA 946
708 ft · 21 sec
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12
At the end of the road, turn left
128 m · 13 sec
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13
Take the exit slight right toward White Street, Port of Dubuque
1432 ft · 32 sec
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14
Continue on White Street
638 ft · 27 sec · White Street
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15
Turn left onto East 7th Street
87 m · 20 sec · East 7th Street
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16
Turn left onto Central Avenue
10 m · 1 sec · Central Avenue
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17
Arrive at your destination
0 m · 1 sec · Central Avenue
Car Route Details
A richer read on the saved driving route between Humboldt and Dubuque.
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 East
Merge slight left
103 mi · 01h 59m
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 Humboldt and Patchy Fog then Mostly Sunny near Dubuque.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Humboldt to Dubuque?
The road trip is about 205.9 miles (331.4 km) and usually takes 03h 22m 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?
Dike is a useful midpoint, sitting about 102.8 miles from Humboldt and 103.1 miles from Dubuque.
How much longer is the road route than the straight-line distance?
The direct path is about 181.2 miles (291.6 km), while the road route adds roughly 24.7 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 10:14 AM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $27.42 one way or $54.83 round trip. Estimated CO2 is about 64.6 kg one way.
What should you check before leaving?
Before you leave, expect Sunny around Humboldt and Patchy Fog then Mostly Sunny near Dubuque.
Flight Path Map
This map shows the direct air route between Humboldt and Dubuque. Straight-line distance: 181.18 mi (291.58 km).
#1 Humboldt
City in Iowa
| Population | 4,544 |
| Coordinates | 42.7208000, -94.2152400 |
| Altitude | 330 |
| 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: 331 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 06h 51m |
| 40 mph (64.37 km/h) | 05h 08m |
| 50 mph (80.47 km/h) | 04h 07m |
| 60 mph (96.56 km/h) | 03h 25m |
| 70 mph (112.65 km/h) | 02h 56m |
| 80 mph (129 km/h) | 02h 34m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.77 | $27.42 | $54.83 |
| Mid-grade | $4.25 | $30.92 | $61.84 |
| Premium | $4.65 | $33.83 | $67.67 |
| Diesel | $5.30 | $38.56 | $77.12 |
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 16, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.