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

Distance from Boulder, MT to Roberts, MT

Distance

217 mi

Time

4 hours 15 mins

Gas Cost

$20 - $39

There are 154.60 miles from Boulder to Roberts in southeast direction and 217 miles (349.23 kilometers) by car, following the I-90 route.

Boulder and Roberts are 4 hours 15 mins far apart, if you drive non-stop .

This is the fastest route from Boulder, MT to Roberts, MT.

Boulder, MT and Roberts, MT are in the same time zone (MDT). Current time in both locations is 1:40 am.

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Lowest Price Rental Cars in Boulder, MT

Planning on renting a car to go from Boulder, MT to Roberts, 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 8.72 gallons of gas to cover the route between Boulder, MT and Roberts, MT.

The estimated cost of gas to go from Boulder to Roberts is $28.14.

During the route, an average car will release 170.93 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 Roberts, MT

If you want to meet halfway between Boulder, MT and Roberts, MT or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 45.644328 and -110.574504, or 45º 38' 39.5808" N, 110º 34' 28.2144" W. This location is 108.62 miles away from Boulder, MT and Roberts, MT and it would take approximately 2 hours 7 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Livingston, MT, situated 110 miles from Boulder, MT and 107 miles from Roberts, MT. It would take 2 hours 18 mins to go from Boulder to Livingston and 2 hours 2 mins to go from Roberts to Livingston.