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

Distance from Boulder, MT to Altha, FL

Distance

2,176 mi

Time

1 day 16 hours

Gas Cost

$205 - $398

There are 1,803.85 miles from Boulder to Altha in southeast direction and 2,176 miles (3,501.93 kilometers) by car, following the I-29 route.

Boulder and Altha are 1 day 16 hours far apart, if you drive non-stop .

This is the fastest route from Boulder, MT to Altha, FL. The halfway point is Onawa, IA.

Please note the time difference between Boulder, MT and Altha, FL is 1 hour. The current time in Boulder is 1:34 am and the current time in Altha is 2:34 am.

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Lowest Price Rental Cars in Boulder, MT

Planning on renting a car to go from Boulder, MT to Altha, FL? 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 87.41 gallons of gas to cover the route between Boulder, MT and Altha, FL.

The estimated cost of gas to go from Boulder to Altha is $287.66.

During the route, an average car will release 1,712.53 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 Altha, FL

If you want to meet halfway between Boulder, MT and Altha, FL or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 42.020733 and -96.125038, or 42º 1' 14.6388" N, 96º 7' 30.1368" W. This location is 1,088.25 miles away from Boulder, MT and Altha, FL and it would take approximately 20 hours 4 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Onawa, IA, situated 1,061 miles from Boulder, MT and 1,234 miles from Altha, FL. It would take 15 hours 25 mins to go from Boulder to Onawa and 19 hours 7 mins to go from Altha to Onawa.