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

Distance from Grass Range, MT to Dumont, CO

Distance

676 mi

Time

11 hours 41 mins

Gas Cost

$63 - $123

There are 526.69 miles from Grass Range to Dumont in southeast direction and 676 miles (1,087.92 kilometers) by car, following the US-87 route.

Grass Range and Dumont are 11 hours 41 mins far apart, if you drive non-stop .

This is the fastest route from Grass Range, MT to Dumont, CO.

Grass Range, MT and Dumont, CO are in the same time zone (MDT). Current time in both locations is 3:36 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 Dumont, CO? 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 27.16 gallons of gas to cover the route between Grass Range, MT and Dumont, CO.

The estimated cost of gas to go from Grass Range to Dumont is $88.60.

During the route, an average car will release 532.16 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 Dumont, CO

If you want to meet halfway between Grass Range, MT and Dumont, CO or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 43.281793 and -106.392091, or 43º 16' 54.4548" N, 106º 23' 31.5276" W. This location is 338.17 miles away from Grass Range, MT and Dumont, CO and it would take approximately 5 hours 50 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Midwest, WY, situated 332 miles from Grass Range, MT and 351 miles from Dumont, CO. It would take 5 hours 56 mins to go from Grass Range to Midwest and 6 hours 3 mins to go from Dumont to Midwest.