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

Distance from Walnut, IL to Troy, MT

Distance

1,678 mi

Time

1 day 6 hours

Gas Cost

$158 - $307

There are 1,362.05 miles from Walnut to Troy in northwest direction and 1,678 miles (2,700.48 kilometers) by car, following the I-90 route.

Walnut and Troy are 1 day 6 hours far apart, if you drive non-stop .

This is the fastest route from Walnut, IL to Troy, MT.

Please note the time difference between Walnut, IL and Troy, MT is 1 hour. The current time in Walnut is 2:15 am and the current time in Troy is 1:15 am.

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Lowest Price Rental Cars in Walnut, IL

Planning on renting a car to go from Walnut, IL to Troy, 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 67.39 gallons of gas to cover the route between Walnut, IL and Troy, MT.

The estimated cost of gas to go from Walnut to Troy is $221.77.

During the route, an average car will release 1,320.25 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 $3.29 per gallon of regular gas. Price last updated on March 13, 2026.
Read more about our CO₂ calculation.

Halfway Point Between Walnut, IL and Troy, MT

If you want to meet halfway between Walnut, IL and Troy, MT or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 44.108636 and -103.263353, or 44º 6' 31.0896" N, 103º 15' 48.0708" W. This location is 838.97 miles away from Walnut, IL and Troy, MT and it would take approximately 15 hours 10 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest city to the halfway point is Rapid City, SD, situated 844 miles from Walnut, IL and 838 miles from Troy, MT. It would take 14 hours 48 mins to go from Walnut to Rapid City and 15 hours 40 mins to go from Troy to Rapid City.