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

Distance from Roberts, MT to Casey, IL

Distance

1,423 mi

Time

1 day 1 hour

Gas Cost

$133 - $258

There are 1,155.60 miles from Roberts to Casey in southeast direction and 1,423 miles (2,290.10 kilometers) by car, following the I-90 and US-14 and US-16 Truck and SD 79 route.

Roberts and Casey are 1 day 1 hour far apart, if you drive non-stop .

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

Please note the time difference between Roberts, MT and Casey, IL is 1 hour. The current time in Roberts is 1:25 am and the current time in Casey is 2:25 am.

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Lowest Price Rental Cars in Roberts, MT

Planning on renting a car to go from Roberts, MT to Casey, 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 57.13 gallons of gas to cover the route between Roberts, MT and Casey, IL.

The estimated cost of gas to go from Roberts to Casey is $186.36.

During the route, an average car will release 1,119.29 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 Roberts, MT and Casey, IL

If you want to meet halfway between Roberts, MT and Casey, IL or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 43.666054 and -97.207756, or 43º 39' 57.7944" N, 97º 12' 27.9216" W. This location is 711.27 miles away from Roberts, MT and Casey, IL and it would take approximately 12 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 Montrose, SD, situated 680 miles from Roberts, MT and 746 miles from Casey, IL. It would take 11 hours 50 mins to go from Roberts to Montrose and 13 hours 33 mins to go from Casey to Montrose.

Major City Closest to Halfway Point

The major city closest to the halfway point between Roberts, MT and Casey, IL is Sioux Falls, SD, situated 707 miles from Roberts, MT and 720 miles from Casey, IL. It would take 12 hours 16 mins to go from Roberts to Sioux Falls and 13 hours 7 mins to go from Casey to Sioux Falls.