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

Distance from Boulder, MT to Allendale, IL

Distance

1,652 mi

Time

1 day 5 hours

Gas Cost

$155 - $302

There are 1,347.98 miles from Boulder to Allendale in southeast direction and 1,652 miles (2,658.64 kilometers) by car, following the I-29 route.

Boulder and Allendale are 1 day 5 hours far apart, if you drive non-stop .

This is the fastest route from Boulder, MT to Allendale, IL. The halfway point is Kimball, SD.

Please note the time difference between Boulder, MT and Allendale, IL is 1 hour. The current time in Boulder is 1:48 am and the current time in Allendale is 2:48 am.

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Lowest Price Rental Cars in Boulder, MT

Planning on renting a car to go from Boulder, MT to Allendale, IL? 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 66.36 gallons of gas to cover the route between Boulder, MT and Allendale, IL.

The estimated cost of gas to go from Boulder to Allendale is $218.40.

During the route, an average car will release 1,300.17 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 Allendale, IL

If you want to meet halfway between Boulder, MT and Allendale, IL or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 43.811138 and -99.039444, or 43º 48' 40.0968" N, 99º 2' 21.9984" W. This location is 826.21 miles away from Boulder, MT and Allendale, IL and it would take approximately 14 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 Kimball, SD, situated 824 miles from Boulder, MT and 883 miles from Allendale, IL. It would take 12 hours 16 mins to go from Boulder to Kimball and 13 hours 6 mins to go from Allendale to Kimball.