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

Distance from Boulder, MT to Avoca, WI

Distance

1,255 mi

Time

22 hours 42 mins

Gas Cost

$118 - $230

There are 1,087.25 miles from Boulder to Avoca in east direction and 1,255 miles (2,019.73 kilometers) by car, following the I-90 and US-14 and US-16 Truck and SD 79 route.

Boulder and Avoca are 22 hours 42 mins far apart, if you drive non-stop .

This is the fastest route from Boulder, MT to Avoca, WI. The halfway point is Cottonwood, SD.

Please note the time difference between Boulder, MT and Avoca, WI is 1 hour. The current time in Boulder is 1:46 am and the current time in Avoca is 2:46 am.

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Lowest Price Rental Cars in Boulder, MT

Planning on renting a car to go from Boulder, MT to Avoca, WI? 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 50.42 gallons of gas to cover the route between Boulder, MT and Avoca, WI.

The estimated cost of gas to go from Boulder to Avoca is $165.93.

During the route, an average car will release 987.80 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 Avoca, WI

If you want to meet halfway between Boulder, MT and Avoca, WI or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 43.841644 and -101.757401, or 43º 50' 29.9184" N, 101º 45' 26.6436" W. This location is 627.71 miles away from Boulder, MT and Avoca, WI and it would take approximately 11 hours 21 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Cottonwood, SD, situated 667 miles from Boulder, MT and 667 miles from Avoca, WI. It would take 10 hours 30 mins to go from Boulder to Cottonwood and 10 hours 4 mins to go from Avoca to Cottonwood.