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

Distance from Grass Range, MT to Denver, CO

Distance

644 mi

Time

11 hours 4 mins

Gas Cost

$60 - $117

There are 538.52 miles from Grass Range to Denver in southeast direction and 644 miles (1,036.42 kilometers) by car, following the US-87 route.

Grass Range and Denver are 11 hours 4 mins far apart, if you drive non-stop .

This is the fastest route from Grass Range, MT to Denver, CO. The halfway point is Midwest, WY.

Grass Range, MT and Denver, CO are in the same time zone (MDT). Current time in both locations is 1:51 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 Denver, 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 25.85 gallons of gas to cover the route between Grass Range, MT and Denver, CO.

The estimated cost of gas to go from Grass Range to Denver is $84.32.

During the route, an average car will release 506.41 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 Denver, CO

If you want to meet halfway between Grass Range, MT and Denver, CO or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 43.496212 and -106.431862, or 43º 29' 46.3632" N, 106º 25' 54.7032" W. This location is 321.81 miles away from Grass Range, MT and Denver, CO and it would take approximately 5 hours 32 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 318 miles from Denver, CO. It would take 6 hours 31 mins to go from Grass Range to Midwest and 4 hours 53 mins to go from Denver to Midwest.