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Distance from Washington, TX to Post Falls, ID

Distance

2,018 mi

Time

1 day 11 hours

Gas Cost

$185 - $359

There are 1,629.75 miles from Washington to Post Falls in northwest direction and 2,018 miles (3,247.66 kilometers) by car, following the I-25 route.

Washington and Post Falls are 1 day 11 hours far apart, if you drive non-stop .

This is the fastest route from Washington, TX to Post Falls, ID.

Please note the time difference between Washington, TX and Post Falls, ID is 2 hours. The current time in Washington is 5:22 pm and the current time in Post Falls is 3:22 pm.

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Lowest Price Rental Cars in Washington, TX

Planning on renting a car to go from Washington, TX to Post Falls, ID? Here there are some offers to rent a car in Washington, TX

Small

From $14

Intermediate

From $18

Full-size

From $24

SUVs

From $28

Vans

From $40

Compare rental car prices in Washington »

Gas Consumption and Emissions

A car with a fuel efficiency of MPG will need 81.06 gallons of gas to cover the route between Washington, TX and Post Falls, ID.

The estimated cost of gas to go from Washington to Post Falls is $259.73.

During the route, an average car will release 1,588.20 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 Washington, TX and Post Falls, ID

If you want to meet halfway between Washington, TX and Post Falls, ID or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 41.521396 and -104.89952, or 41º 31' 17.0256" N, 104º 53' 58.272" W. This location is 1,009.24 miles away from Washington, TX and Post Falls, ID and it would take approximately 17 hours 31 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Diamond, WY, situated 1,105 miles from Washington, TX and 937 miles from Post Falls, ID. It would take 20 hours 10 mins to go from Washington to Diamond and 15 hours 48 mins to go from Post Falls to Diamond.