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

Distance from Roberts, MT to Sullivan, IL

Distance

1,363 mi

Time

1 day

Gas Cost

$127 - $247

There are 1,116.88 miles from Roberts to Sullivan in southeast direction and 1,363 miles (2,193.54 kilometers) by car, following the I-90 and US-14 and US-16 Truck and SD 79 route.

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

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

Please note the time difference between Roberts, MT and Sullivan, IL is 1 hour. The current time in Roberts is 11:26 am and the current time in Sullivan is 12:26 pm.

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Lowest Price Rental Cars in Roberts, MT

Planning on renting a car to go from Roberts, MT to Sullivan, 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 54.76 gallons of gas to cover the route between Roberts, MT and Sullivan, IL.

The estimated cost of gas to go from Roberts to Sullivan is $178.61.

During the route, an average car will release 1,072.77 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 Sullivan, IL

If you want to meet halfway between Roberts, MT and Sullivan, IL or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 43.665658 and -97.719324, or 43º 39' 56.3688" N, 97º 43' 9.5664" W. This location is 681.71 miles away from Roberts, MT and Sullivan, IL and it would take approximately 12 hours 7 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Alexandria, SD, situated 649 miles from Roberts, MT and 717 miles from Sullivan, IL. It would take 11 hours 17 mins to go from Roberts to Alexandria and 13 hours 1 min to go from Sullivan to Alexandria.