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

Distance from Grass Range, MT to Mackey, IN

Distance

1,528 mi

Time

1 day 3 hours

Gas Cost

$142 - $277

There are 1,239.96 miles from Grass Range to Mackey in southeast direction and 1,528 miles (2,459.08 kilometers) by car, following the I-29 route.

Grass Range and Mackey are 1 day 3 hours far apart, if you drive non-stop .

This is the fastest route from Grass Range, MT to Mackey, IN.

Please note the time difference between Grass Range, MT and Mackey, IN is 1 hour. The current time in Grass Range is 3:03 am and the current time in Mackey is 4:03 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 Mackey, IN? 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 61.38 gallons of gas to cover the route between Grass Range, MT and Mackey, IN.

The estimated cost of gas to go from Grass Range to Mackey is $200.21.

During the route, an average car will release 1,202.49 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 Mackey, IN

If you want to meet halfway between Grass Range, MT and Mackey, IN or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 43.661719 and -97.113082, or 43º 39' 42.1884" N, 97º 6' 47.0952" W. This location is 764.14 miles away from Grass Range, MT and Mackey, IN and it would take approximately 13 hours 42 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Humboldt, SD, situated 729 miles from Grass Range, MT and 802 miles from Mackey, IN. It would take 12 hours 49 mins to go from Grass Range to Humboldt and 14 hours 40 mins to go from Mackey to Humboldt.

Major City Closest to Halfway Point

The major city closest to the halfway point between Grass Range, MT and Mackey, IN is Sioux Falls, SD, situated 751 miles from Grass Range, MT and 782 miles from Mackey, IN. It would take 13 hours 14 mins to go from Grass Range to Sioux Falls and 14 hours 22 mins to go from Mackey to Sioux Falls.