Distance between cities › USA › Montana › Boulder, MT › Distance from Boulder to Austin Book Hotels

Distance from Boulder, MT to Austin, CO

Distance

782 mi

Time

13 hours 33 mins

Gas Cost

$74 - $143

There are 557.02 miles from Boulder to Austin in southeast direction and 782 miles (1,258.51 kilometers) by car, following the I-15 route.

Boulder and Austin are 13 hours 33 mins far apart, if you drive non-stop .

This is the fastest route from Boulder, MT to Austin, CO. The halfway point is Brigham City, UT.

Boulder, MT and Austin, CO are in the same time zone (MDT). Current time in both locations is 1:48 am.

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Lowest Price Rental Cars in Boulder, MT

Planning on renting a car to go from Boulder, MT to Austin, CO? Here there are some offers to rent a car in Boulder, MT

Small

From $14

Intermediate

From $18

Full-size

From $24

SUVs

From $28

Vans

From $40

Compare rental car prices in Boulder »

Gas Consumption and Emissions

A car with a fuel efficiency of MPG will need 31.41 gallons of gas to cover the route between Boulder, MT and Austin, CO.

The estimated cost of gas to go from Boulder to Austin is $103.36.

During the route, an average car will release 615.33 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 $3.29 per gallon of regular gas. Price last updated on March 13, 2026.
Read more about our CO₂ calculation.

Halfway Point Between Boulder, MT and Austin, CO

If you want to meet halfway between Boulder, MT and Austin, CO or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 41.504673 and -112.070366, or 41º 30' 16.8228" N, 112º 4' 13.3176" W. This location is 391.02 miles away from Boulder, MT and Austin, CO and it would take approximately 6 hours 46 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Brigham City, UT, situated 401 miles from Boulder, MT and 386 miles from Austin, CO. It would take 6 hours 55 mins to go from Boulder to Brigham City and 5 hours 54 mins to go from Austin to Brigham City.