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

Distance from Custer, SD to Derby, IA

Distance

719 mi

Time

12 hours 29 mins

Gas Cost

$67 - $130

There are 553.27 miles from Custer to Derby in southeast direction and 719 miles (1,157.12 kilometers) by car, following the I-90 and US-14 route.

Custer and Derby are 12 hours 29 mins far apart, if you drive non-stop .

This is the fastest route from Custer, SD to Derby, IA. The halfway point is Spencer, SD.

Please note the time difference between Custer, SD and Derby, IA is 1 hour. The current time in Custer is 2:51 am and the current time in Derby is 3:51 am.

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Lowest Price Rental Cars in Custer, SD

Planning on renting a car to go from Custer, SD to Derby, 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 28.89 gallons of gas to cover the route between Custer, SD and Derby, IA.

The estimated cost of gas to go from Custer to Derby is $94.24.

During the route, an average car will release 566.03 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 Derby, IA

If you want to meet halfway between Custer, SD and Derby, IA or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 43.665066 and -97.551132, or 43º 39' 54.2376" N, 97º 33' 4.0752" W. This location is 359.69 miles away from Custer, SD and Derby, IA and it would take approximately 6 hours 14 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Spencer, SD, situated 342 miles from Custer, SD and 389 miles from Derby, IA. It would take 4 hours 51 mins to go from Custer to Spencer and 5 hours 53 mins to go from Derby to Spencer.