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

Distance from Grass Range, MT to Lamar, OK

Distance

1,396 mi

Time

1 day

Gas Cost

$116 - $226

There are 1,053.23 miles from Grass Range to Lamar in southeast direction and 1,396 miles (2,246.64 kilometers) by car, following the I-70 route.

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

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

Please note the time difference between Grass Range, MT and Lamar, OK is 1 hour. The current time in Grass Range is 12:18 am and the current time in Lamar is 1:18 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 Lamar, 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 56.05 gallons of gas to cover the route between Grass Range, MT and Lamar, OK.

The estimated cost of gas to go from Grass Range to Lamar is $163.68.

During the route, an average car will release 1,098.21 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 $2.92 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 Lamar, OK

If you want to meet halfway between Grass Range, MT and Lamar, OK or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 39.348598 and -103.855686, or 39º 20' 54.9528" N, 103º 51' 20.4696" W. This location is 697.87 miles away from Grass Range, MT and Lamar, OK and it would take approximately 12 hours 1 min to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Agate, CO, situated 702 miles from Grass Range, MT and 694 miles from Lamar, OK. It would take 11 hours 58 mins to go from Grass Range to Agate and 12 hours 6 mins to go from Lamar to Agate.