Distance between cities › USA › Illinois › Walnut, IL › Distance from Walnut to Augusta Book Hotels

Distance from Walnut, IL to Augusta, MT

Distance

1,429 mi

Time

1 day 1 hour

Gas Cost

$133 - $259

There are 1,190.31 miles from Walnut to Augusta in northwest direction and 1,429 miles (2,299.75 kilometers) by car, following the I-90 route.

Walnut and Augusta are 1 day 1 hour far apart, if you drive non-stop .

This is the fastest route from Walnut, IL to Augusta, MT. The halfway point is Belvidere, SD.

Please note the time difference between Walnut, IL and Augusta, MT is 1 hour. The current time in Walnut is 2:41 pm and the current time in Augusta is 1:41 pm.

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Lowest Price Rental Cars in Walnut, IL

Planning on renting a car to go from Walnut, IL to Augusta, MT? Here there are some offers to rent a car in Walnut, IL

Small

From $14

Intermediate

From $18

Full-size

From $24

SUVs

From $28

Vans

From $40

Compare rental car prices in Walnut »

Gas Consumption and Emissions

A car with a fuel efficiency of MPG will need 57.39 gallons of gas to cover the route between Walnut, IL and Augusta, MT.

The estimated cost of gas to go from Walnut to Augusta is $187.21.

During the route, an average car will release 1,124.42 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 $3.26 per gallon of regular gas. Price last updated on March 12, 2026.
Read more about our CO₂ calculation.

Halfway Point Between Walnut, IL and Augusta, MT

If you want to meet halfway between Walnut, IL and Augusta, MT or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 43.858891 and -101.377449, or 43º 51' 32.0076" N, 101º 22' 38.8164" W. This location is 714.53 miles away from Walnut, IL and Augusta, MT and it would take approximately 12 hours 55 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Belvidere, SD, situated 755 miles from Walnut, IL and 789 miles from Augusta, MT. It would take 10 hours 45 mins to go from Walnut to Belvidere and 12 hours 15 mins to go from Augusta to Belvidere.