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

Distance from Boulder, MT to Reserve, MT

Distance

525 mi

Time

9 hours 37 mins

Gas Cost

$48 - $94

There are 393.54 miles from Boulder to Reserve in northeast direction and 525 miles (844.91 kilometers) by car, following the US-2 route.

Boulder and Reserve are 9 hours 37 mins far apart, if you drive non-stop .

This is the fastest route from Boulder, MT to Reserve, MT. The halfway point is Custer, MT.

Boulder, MT and Reserve, MT are in the same time zone (MDT). Current time in both locations is 1:44 am.

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Lowest Price Rental Cars in Boulder, MT

Planning on renting a car to go from Boulder, MT to Reserve, MT? 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 21.07 gallons of gas to cover the route between Boulder, MT and Reserve, MT.

The estimated cost of gas to go from Boulder to Reserve is $67.96.

During the route, an average car will release 412.83 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 $3.23 per gallon of regular gas. Price last updated on March 13, 2026.
Read more about our CO₂ calculation.

Halfway Point Between Boulder, MT and Reserve, MT

If you want to meet halfway between Boulder, MT and Reserve, MT or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 46.098988 and -107.634125, or 46º 5' 56.3568" N, 107º 38' 2.85" W. This location is 262.34 miles away from Boulder, MT and Reserve, MT and it would take approximately 4 hours 48 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Custer, MT, situated 279 miles from Boulder, MT and 288 miles from Reserve, MT. It would take 4 hours 37 mins to go from Boulder to Custer and 6 hours 1 min to go from Reserve to Custer.