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

Distance from Custer, SD to Allen, KS

Distance

702 mi

Time

13 hours 23 mins

Gas Cost

$64 - $125

There are 522.86 miles from Custer to Allen in southeast direction and 702 miles (1,129.76 kilometers) by car, following the I-80 route.

Custer and Allen are 13 hours 23 mins far apart, if you drive non-stop .

This is the fastest route from Custer, SD to Allen, KS. The halfway point is Salem, SD.

Please note the time difference between Custer, SD and Allen, KS is 1 hour. The current time in Custer is 10:33 pm and the current time in Allen is 11:33 pm.

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Lowest Price Rental Cars in Custer, SD

Planning on renting a car to go from Custer, SD to Allen, KS? 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 28.20 gallons of gas to cover the route between Custer, SD and Allen, KS.

The estimated cost of gas to go from Custer to Allen is $90.36.

During the route, an average car will release 552.52 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 $3.20 per gallon of regular gas. Price last updated on March 11, 2026.
Read more about our CO₂ calculation.

Halfway Point Between Custer, SD and Allen, KS

If you want to meet halfway between Custer, SD and Allen, KS or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 43.651527 and -97.477051, or 43º 39' 5.4972" N, 97º 28' 37.3836" W. This location is 351.11 miles away from Custer, SD and Allen, KS and it would take approximately 6 hours 41 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Salem, SD, situated 351 miles from Custer, SD and 428 miles from Allen, KS. It would take 4 hours 53 mins to go from Custer to Salem and 7 hours to go from Allen to Salem.