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

Distance from Boulder, MT to Aurora, IL

Distance

1,442 mi

Time

1 day 1 hour

Gas Cost

$136 - $264

There are 1,217.62 miles from Boulder to Aurora in southeast direction and 1,442 miles (2,320.67 kilometers) by car, following the I-90 and US-14 and US-16 Truck and SD 79 route.

Boulder and Aurora are 1 day 1 hour far apart, if you drive non-stop .

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

Please note the time difference between Boulder, MT and Aurora, IL is 1 hour. The current time in Boulder is 1:37 am and the current time in Aurora is 2:37 am.

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Lowest Price Rental Cars in Boulder, MT

Planning on renting a car to go from Boulder, MT to Aurora, 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 57.89 gallons of gas to cover the route between Boulder, MT and Aurora, IL.

The estimated cost of gas to go from Boulder to Aurora is $190.53.

During the route, an average car will release 1,134.26 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 Aurora, IL

If you want to meet halfway between Boulder, MT and Aurora, IL or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 43.905842 and -100.330467, or 43º 54' 21.0312" N, 100º 19' 49.6812" W. This location is 720.78 miles away from Boulder, MT and Aurora, IL and it would take approximately 12 hours 42 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Vivian, SD, situated 755 miles from Boulder, MT and 737 miles from Aurora, IL. It would take 11 hours 26 mins to go from Boulder to Vivian and 10 hours 37 mins to go from Aurora to Vivian.