Distance between cities › USA › Iowa › Preston, IA › Distance from Preston to Dubuque Book Hotels

Distance from Preston, IA to Dubuque, IA

Distance

40 mi

Time

1 hour 2 mins

Gas Cost

$4 - $7

There are 34.01 miles from Preston to Dubuque in northwest direction and 40 miles (64.37 kilometers) by car, following the CR Z34 route.

Preston and Dubuque are 1 hour 2 mins far apart, if you drive non-stop .

This is the fastest route from Preston, IA to Dubuque, IA. The halfway point is Andrew, IA.

Preston, IA and Dubuque, IA are in the same time zone (CDT). Current time in both locations is 4:19 pm.

Any questions or tips to share?

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Lowest Price Rental Cars in Preston, IA

Planning on renting a car to go from Preston, IA to Dubuque, IA? Here there are some offers to rent a car in Preston, IA

Small

From $14

Intermediate

From $18

Full-size

From $24

SUVs

From $28

Vans

From $40

Compare rental car prices in Preston »

Gas Consumption and Emissions

A car with a fuel efficiency of MPG will need 1.59 gallons of gas to cover the route between Preston, IA and Dubuque, IA.

The estimated cost of gas to go from Preston to Dubuque is $5.30.

During the route, an average car will release 31.16 pounds of CO₂ to the atmosphere. The carbon footprint would be 0.79 pounds of CO₂ per mile.

Average USA gas price used for calculation is $3.34 per gallon of regular gas. Price last updated on March 18, 2026.
Read more about our CO₂ calculation.

Recommended hotels in Dubuque, IA

Looking for a place to stay in Dubuque, IA? Check out these hotel deals:

Halfway Point Between Preston, IA and Dubuque, IA

If you want to meet halfway between Preston, IA and Dubuque, IA or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 42.140835 and -90.675827, or 42º 8' 27.006" N, 90º 40' 32.9772" W. This location is 19.80 miles away from Preston, IA and Dubuque, IA and it would take approximately 31 minutes to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Andrew, IA, situated 22 miles from Preston, IA and 29 miles from Dubuque, IA. It would take 33 minutes to go from Preston to Andrew and 39 minutes to go from Dubuque to Andrew.