Distance between cities › USA › Montana › Grass Range, MT › Distance from Grass Range to Flat Book Hotels

Distance from Grass Range, MT to Flat, KY

Distance

1,681 mi

Time

1 day 6 hours

Gas Cost

$157 - $305

There are 1,434.65 miles from Grass Range to Flat in southeast direction and 1,681 miles (2,705.31 kilometers) by car, following the I-94 route.

Grass Range and Flat are 1 day 6 hours far apart, if you drive non-stop .

This is the fastest route from Grass Range, MT to Flat, KY.

Please note the time difference between Grass Range, MT and Flat, KY is 2 hours. The current time in Grass Range is 6:12 am and the current time in Flat is 8:12 am.

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Lowest Price Rental Cars in Grass Range, MT

Planning on renting a car to go from Grass Range, MT to Flat, KY? Here there are some offers to rent a car in Grass Range, MT

Small

From $14

Intermediate

From $18

Full-size

From $24

SUVs

From $28

Vans

From $40

Compare rental car prices in Grass Range »

Gas Consumption and Emissions

A car with a fuel efficiency of MPG will need 67.50 gallons of gas to cover the route between Grass Range, MT and Flat, KY.

The estimated cost of gas to go from Grass Range to Flat is $220.18.

During the route, an average car will release 1,322.41 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 Grass Range, MT and Flat, KY

If you want to meet halfway between Grass Range, MT and Flat, KY or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 45.497325 and -94.177815, or 45º 29' 50.37" N, 94º 10' 40.134" W. This location is 840.34 miles away from Grass Range, MT and Flat, KY and it would take approximately 15 hours 4 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Saint Augusta, MN, situated 775 miles from Grass Range, MT and 911 miles from Flat, KY. It would take 13 hours 27 mins to go from Grass Range to Saint Augusta and 17 hours 9 mins to go from Flat to Saint Augusta.