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

Distance from Custer, SD to Olalla, WA

Distance

1,199 mi

Time

21 hours 18 mins

Gas Cost

$110 - $213

There are 947.60 miles from Custer to Olalla in northwest direction and 1,199 miles (1,929.60 kilometers) by car, following the I-90 route.

Custer and Olalla are 21 hours 18 mins far apart, if you drive non-stop .

This is the fastest route from Custer, SD to Olalla, WA. The halfway point is Warm Springs, MT.

Please note the time difference between Custer, SD and Olalla, WA is 1 hour. The current time in Custer is 11:50 pm and the current time in Olalla is 10:50 pm.

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Lowest Price Rental Cars in Custer, SD

Planning on renting a car to go from Custer, SD to Olalla, 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 48.17 gallons of gas to cover the route between Custer, SD and Olalla, WA.

The estimated cost of gas to go from Custer to Olalla is $154.34.

During the route, an average car will release 943.75 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 $3.20 per gallon of regular gas. Price last updated on March 11, 2026.
Read more about our CO₂ calculation.

Halfway Point Between Custer, SD and Olalla, WA

If you want to meet halfway between Custer, SD and Olalla, WA or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 46.268661 and -112.755737, or 46º 16' 7.1796" N, 112º 45' 20.6532" W. This location is 599.72 miles away from Custer, SD and Olalla, WA and it would take approximately 10 hours 39 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Warm Springs, MT, situated 622 miles from Custer, SD and 608 miles from Olalla, WA. It would take 9 hours 7 mins to go from Custer to Warm Springs and 8 hours 59 mins to go from Olalla to Warm Springs.