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

Distance from Grass Range, MT to Copan, OK

Distance

1,274 mi

Time

22 hours 13 mins

Gas Cost

$119 - $231

There are 960.63 miles from Grass Range to Copan in southeast direction and 1,274 miles (2,050.30 kilometers) by car, following the I-70 route.

Grass Range and Copan are 22 hours 13 mins far apart, if you drive non-stop .

This is the fastest route from Grass Range, MT to Copan, OK.

Please note the time difference between Grass Range, MT and Copan, OK is 1 hour. The current time in Grass Range is 7:38 am and the current time in Copan is 8:38 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 Copan, OK? 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 51.16 gallons of gas to cover the route between Grass Range, MT and Copan, OK.

The estimated cost of gas to go from Grass Range to Copan is $166.88.

During the route, an average car will release 1,002.30 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 Copan, OK

If you want to meet halfway between Grass Range, MT and Copan, OK or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 39.739144 and -104.549729, or 39º 44' 20.9184" N, 104º 32' 59.0244" W. This location is 636.92 miles away from Grass Range, MT and Copan, OK and it would take approximately 11 hours 6 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Watkins, CO, situated 658 miles from Grass Range, MT and 617 miles from Copan, OK. It would take 11 hours 14 mins to go from Grass Range to Watkins and 11 hours 2 mins to go from Copan to Watkins.

Major City Closest to Halfway Point

The major city closest to the halfway point between Grass Range, MT and Copan, OK is Denver, CO, situated 644 miles from Grass Range, MT and 641 miles from Copan, OK. It would take 11 hours 4 mins to go from Grass Range to Denver and 11 hours 34 mins to go from Copan to Denver.