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

Distance from Custer, SD to Astoria, SD

Distance

459 mi

Time

7 hours 42 mins

Gas Cost

$41 - $79

There are 353.66 miles from Custer to Astoria in east direction and 459 miles (738.69 kilometers) by car, following the I-90 and US-14 route.

Custer and Astoria are 7 hours 42 mins far apart, if you drive non-stop .

This is the fastest route from Custer, SD to Astoria, SD. The halfway point is Kennebec, SD.

Please note the time difference between Custer, SD and Astoria, SD is 1 hour. The current time in Custer is 7:06 pm and the current time in Astoria is 8:06 pm.

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Lowest Price Rental Cars in Custer, SD

Planning on renting a car to go from Custer, SD to Astoria, SD? 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 18.41 gallons of gas to cover the route between Custer, SD and Astoria, SD.

The estimated cost of gas to go from Custer to Astoria is $57.03.

During the route, an average car will release 360.79 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 $3.10 per gallon of regular gas. Price last updated on March 11, 2026.
Read more about our CO₂ calculation.

Halfway Point Between Custer, SD and Astoria, SD

If you want to meet halfway between Custer, SD and Astoria, SD or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 43.877129 and -99.736160, or 43º 52' 37.6644" N, 99º 44' 10.176" W. This location is 229.27 miles away from Custer, SD and Astoria, SD and it would take approximately 3 hours 51 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Kennebec, SD, situated 220 miles from Custer, SD and 241 miles from Astoria, SD. It would take 3 hours 11 mins to go from Custer to Kennebec and 3 hours 17 mins to go from Astoria to Kennebec.