Distance between cities › USA › South Dakota › Custer, SD › Distance from Custer to Dubuque Book Hotels

Distance from Custer, SD to Dubuque, IA

Distance

767 mi

Time

13 hours 41 mins

Gas Cost

$72 - $139

There are 657.32 miles from Custer to Dubuque in east direction and 767 miles (1,234.37 kilometers) by car, following the I-90 and US-14 route.

Custer and Dubuque are 13 hours 41 mins far apart, if you drive non-stop .

This is the fastest route from Custer, SD to Dubuque, IA. The halfway point is Buffalo Ridge, SD.

Please note the time difference between Custer, SD and Dubuque, IA is 1 hour. The current time in Custer is 2:48 am and the current time in Dubuque is 3:48 am.

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Lowest Price Rental Cars in Custer, SD

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

Small

From $14

Intermediate

From $18

Full-size

From $24

SUVs

From $28

Vans

From $40

Compare rental car prices in Custer »

Gas Consumption and Emissions

A car with a fuel efficiency of MPG will need 30.82 gallons of gas to cover the route between Custer, SD and Dubuque, IA.

The estimated cost of gas to go from Custer to Dubuque is $100.52.

During the route, an average car will release 603.75 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 $3.26 per gallon of regular gas. Price last updated on March 12, 2026.
Read more about our CO₂ calculation.

Halfway Point Between Custer, SD and Dubuque, IA

If you want to meet halfway between Custer, SD 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 43.614433 and -96.769958, or 43º 36' 51.9588" N, 96º 46' 11.8488" W. This location is 383.66 miles away from Custer, SD and Dubuque, IA and it would take approximately 6 hours 50 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Buffalo Ridge, SD, situated 377 miles from Custer, SD and 398 miles from Dubuque, IA. It would take 5 hours 13 mins to go from Custer to Buffalo Ridge and 6 hours 5 mins to go from Dubuque to Buffalo Ridge.

Major City Closest to Halfway Point

The major city closest to the halfway point between Custer, SD and Dubuque, IA is Sioux Falls, SD, situated 387 miles from Custer, SD and 397 miles from Dubuque, IA. It would take 5 hours 21 mins to go from Custer to and 6 hours 5 mins to go from Dubuque to Sioux Falls.