Distance between cities › USA › Montana › Roberts, MT › Distance from Roberts to Arnold Book Hotels

Distance from Roberts, MT to Arnold, IL

Distance

1,273 mi

Time

22 hours 32 mins

Gas Cost

$117 - $227

There are 1,040.66 miles from Roberts to Arnold in southeast direction and 1,273 miles (2,048.69 kilometers) by car, following the I-29 route.

Roberts and Arnold are 22 hours 32 mins far apart, if you drive non-stop .

This is the fastest route from Roberts, MT to Arnold, IL.

Please note the time difference between Roberts, MT and Arnold, IL is 1 hour. The current time in Roberts is 10:39 pm and the current time in Arnold is 11:39 pm.

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Lowest Price Rental Cars in Roberts, MT

Planning on renting a car to go from Roberts, MT to Arnold, IL? Here there are some offers to rent a car in Roberts, MT

Small

From $14

Intermediate

From $18

Full-size

From $24

SUVs

From $28

Vans

From $40

Compare rental car prices in Roberts »

Gas Consumption and Emissions

A car with a fuel efficiency of MPG will need 51.12 gallons of gas to cover the route between Roberts, MT and Arnold, IL.

The estimated cost of gas to go from Roberts to Arnold is $163.78.

During the route, an average car will release 1,001.49 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 $3.20 per gallon of regular gas. Price last updated on March 11, 2026.
Read more about our CO₂ calculation.

Halfway Point Between Roberts, MT and Arnold, IL

If you want to meet halfway between Roberts, MT and Arnold, IL or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 43.708562 and -98.623182, or 43º 42' 30.8232" N, 98º 37' 23.4552" W. This location is 636.41 miles away from Roberts, MT and Arnold, IL and it would take approximately 11 hours 16 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is White Lake, SD, situated 602 miles from Roberts, MT and 673 miles from Arnold, IL. It would take 10 hours 33 mins to go from Roberts to White Lake and 12 hours 4 mins to go from Arnold to White Lake.