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

Distance from Grass Range, MT to Roby, TX

Distance

1,292 mi

Time

22 hours 56 mins

Gas Cost

$120 - $234

There are 1,081.62 miles from Grass Range to Roby in southeast direction and 1,292 miles (2,079.27 kilometers) by car, following the US-87 route.

Grass Range and Roby are 22 hours 56 mins far apart, if you drive non-stop .

This is the fastest route from Grass Range, MT to Roby, TX.

Please note the time difference between Grass Range, MT and Roby, TX is 1 hour. The current time in Grass Range is 1:53 am and the current time in Roby is 2:53 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 Roby, TX? 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 51.91 gallons of gas to cover the route between Grass Range, MT and Roby, TX.

The estimated cost of gas to go from Grass Range to Roby is $169.32.

During the route, an average car will release 1,016.97 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 Roby, TX

If you want to meet halfway between Grass Range, MT and Roby, TX or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 39.927514 and -104.811508, or 39º 55' 39.0504" N, 104º 48' 41.4288" W. This location is 646.25 miles away from Grass Range, MT and Roby, TX and it would take approximately 11 hours 28 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Henderson, CO, situated 635 miles from Grass Range, MT and 661 miles from Roby, TX. It would take 10 hours 52 mins to go from Grass Range to Henderson and 12 hours 12 mins to go from Roby to Henderson.

Major City Closest to Halfway Point

The major city closest to the halfway point between Grass Range, MT and Roby, TX is Denver, CO, situated 644 miles from Grass Range, MT and 661 miles from Roby, TX. It would take 11 hours 4 mins to go from Grass Range to Denver and 12 hours to go from Roby to Denver.