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

Distance from Boulder, MT to Andover, IL

Distance

1,362 mi

Time

23 hours 54 mins

Gas Cost

$127 - $247

There are 1,137.26 miles from Boulder to Andover in southeast direction and 1,362 miles (2,191.93 kilometers) by car, following the I-90 and US-14 and US-16 Truck and SD 79 route.

Boulder and Andover are 23 hours 54 mins far apart, if you drive non-stop .

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

Please note the time difference between Boulder, MT and Andover, IL is 1 hour. The current time in Boulder is 12:01 am and the current time in Andover is 1:01 am.

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Lowest Price Rental Cars in Boulder, MT

Planning on renting a car to go from Boulder, MT to Andover, 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 54.69 gallons of gas to cover the route between Boulder, MT and Andover, IL.

The estimated cost of gas to go from Boulder to Andover is $178.38.

During the route, an average car will release 1,071.39 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 $3.26 per gallon of regular gas. Price last updated on March 12, 2026.
Read more about our CO₂ calculation.

Halfway Point Between Boulder, MT and Andover, IL

If you want to meet halfway between Boulder, MT and Andover, IL or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 43.864697 and -101.245010, or 43º 51' 52.9092" N, 101º 14' 42.036" W. This location is 680.83 miles away from Boulder, MT and Andover, IL and it would take approximately 11 hours 57 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Belvidere, SD, situated 703 miles from Boulder, MT and 695 miles from Andover, IL. It would take 10 hours 45 mins to go from Boulder to Belvidere and 9 hours 58 mins to go from Andover to Belvidere.