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

Distance from Custer, SD to Adna, WA

Distance

1,236 mi

Time

21 hours 58 mins

Gas Cost

$113 - $220

There are 965.33 miles from Custer to Adna in west direction and 1,236 miles (1,989.15 kilometers) by car, following the I-90 route.

Custer and Adna are 21 hours 58 mins far apart, if you drive non-stop .

This is the fastest route from Custer, SD to Adna, WA. The halfway point is Garrison, MT.

Please note the time difference between Custer, SD and Adna, WA is 1 hour. The current time in Custer is 11:54 pm and the current time in Adna is 10:54 pm.

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Lowest Price Rental Cars in Custer, SD

Planning on renting a car to go from Custer, SD to Adna, WA? 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 49.62 gallons of gas to cover the route between Custer, SD and Adna, WA.

The estimated cost of gas to go from Custer to Adna is $158.99.

During the route, an average car will release 972.22 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 Adna, WA

If you want to meet halfway between Custer, SD and Adna, WA or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 46.530537 and -112.806175, or 46º 31' 49.9332" N, 112º 48' 22.23" W. This location is 617.81 miles away from Custer, SD and Adna, WA and it would take approximately 10 hours 59 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Garrison, MT, situated 656 miles from Custer, SD and 620 miles from Adna, WA. It would take 9 hours 31 mins to go from Custer to Garrison and 9 hours 10 mins to go from Adna to Garrison.