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

Distance from Boulder, MT to Arthur, IL

Distance

1,545 mi

Time

1 day 3 hours

Gas Cost

$145 - $283

There are 1,271.68 miles from Boulder to Arthur in southeast direction and 1,545 miles (2,486.44 kilometers) by car, following the I-90 and US-14 and US-16 Truck and SD 79 route.

Boulder and Arthur are 1 day 3 hours far apart, if you drive non-stop .

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

Please note the time difference between Boulder, MT and Arthur, IL is 1 hour. The current time in Boulder is 1:44 am and the current time in Arthur is 2:44 am.

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Lowest Price Rental Cars in Boulder, MT

Planning on renting a car to go from Boulder, MT to Arthur, 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 62.07 gallons of gas to cover the route between Boulder, MT and Arthur, IL.

The estimated cost of gas to go from Boulder to Arthur is $204.26.

During the route, an average car will release 1,216.01 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 Arthur, IL

If you want to meet halfway between Boulder, MT and Arthur, IL or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 43.854015 and -99.527878, or 43º 51' 14.454" N, 99º 31' 40.3608" W. This location is 772.73 miles away from Boulder, MT and Arthur, IL and it would take approximately 13 hours 44 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Reliance, SD, situated 789 miles from Boulder, MT and 827 miles from Arthur, IL. It would take 11 hours 50 mins to go from Boulder to Reliance and 12 hours 2 mins to go from Arthur to Reliance.