Distance between cities › USA › Virginia › Onemo, VA › Distance from Onemo to Big Arm Book Hotels

Distance from Onemo, VA to Big Arm, MT

Distance

2,471 mi

Time

1 day 21 hours

Gas Cost

$230 - $448

There are 2,038.68 miles from Onemo to Big Arm in northwest direction and 2,471 miles (3,976.69 kilometers) by car, following the I-90 route.

Onemo and Big Arm are 1 day 21 hours far apart, if you drive non-stop .

This is the fastest route from Onemo, VA to Big Arm, MT.

Please note the time difference between Onemo, VA and Big Arm, MT is 2 hours. The current time in Onemo is 10:51 am and the current time in Big Arm is 8:51 am.

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Lowest Price Rental Cars in Onemo, VA

Planning on renting a car to go from Onemo, VA to Big Arm, MT? Here there are some offers to rent a car in Onemo, VA

Small

From $14

Intermediate

From $18

Full-size

From $24

SUVs

From $28

Vans

From $40

Compare rental car prices in Onemo »

Gas Consumption and Emissions

A car with a fuel efficiency of MPG will need 99.23 gallons of gas to cover the route between Onemo, VA and Big Arm, MT.

The estimated cost of gas to go from Onemo to Big Arm is $323.69.

During the route, an average car will release 1,944.13 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 Onemo, VA and Big Arm, MT

If you want to meet halfway between Onemo, VA and Big Arm, MT or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 43.679287 and -94.475634, or 43º 40' 45.4332" N, 94º 28' 32.2824" W. This location is 1,235.43 miles away from Onemo, VA and Big Arm, MT and it would take approximately 22 hours 35 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Fairmont, MN, situated 1,278 miles from Onemo, VA and 1,196 miles from Big Arm, MT. It would take 1 day to go from Onemo to Fairmont and 20 hours 28 mins to go from Big Arm to Fairmont.