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

Distance from Boulder, MT to Agate, CO

Distance

837 mi

Time

14 hours 12 mins

Gas Cost

$79 - $153

There are 624.45 miles from Boulder to Agate in southeast direction and 837 miles (1,347.02 kilometers) by car, following the US-87 route.

Boulder and Agate are 14 hours 12 mins far apart, if you drive non-stop .

This is the fastest route from Boulder, MT to Agate, CO.

Boulder, MT and Agate, CO are in the same time zone (MDT). Current time in both locations is 1:34 am.

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Lowest Price Rental Cars in Boulder, MT

Planning on renting a car to go from Boulder, MT to Agate, 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 33.63 gallons of gas to cover the route between Boulder, MT and Agate, CO.

The estimated cost of gas to go from Boulder to Agate is $110.68.

During the route, an average car will release 658.91 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 Agate, CO

If you want to meet halfway between Boulder, MT and Agate, CO or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 44.336543 and -106.685463, or 44º 20' 11.5548" N, 106º 41' 7.6668" W. This location is 418.72 miles away from Boulder, MT and Agate, CO and it would take approximately 7 hours 6 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Buffalo, WY, situated 390 miles from Boulder, MT and 448 miles from Agate, CO. It would take 6 hours 51 mins to go from Boulder to Buffalo and 7 hours 22 mins to go from Agate to Buffalo.