Distance between cities › USA › Illinois › Rio, IL › Distance from Rio to Cameron Book Hotels

Distance from Rio, IL to Cameron, MT

Distance

1,349 mi

Time

23 hours 51 mins

Gas Cost

$126 - $244

There are 1,105.60 miles from Rio to Cameron in northwest direction and 1,349 miles (2,171.01 kilometers) by car, following the I-90 route.

Rio and Cameron are 23 hours 51 mins far apart, if you drive non-stop .

This is the fastest route from Rio, IL to Cameron, MT.

Please note the time difference between Rio, IL and Cameron, MT is 1 hour. The current time in Rio is 4:15 am and the current time in Cameron is 3:15 am.

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Lowest Price Rental Cars in Rio, IL

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

Small

From $14

Intermediate

From $18

Full-size

From $24

SUVs

From $28

Vans

From $40

Compare rental car prices in Rio »

Gas Consumption and Emissions

A car with a fuel efficiency of MPG will need 54.18 gallons of gas to cover the route between Rio, IL and Cameron, MT.

The estimated cost of gas to go from Rio to Cameron is $176.72.

During the route, an average car will release 1,061.41 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 Rio, IL and Cameron, MT

If you want to meet halfway between Rio, IL and Cameron, MT or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 43.901171 and -100.653848, or 43º 54' 4.2156" N, 100º 39' 13.8528" W. This location is 674.49 miles away from Rio, IL and Cameron, MT and it would take approximately 11 hours 55 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Murdo, SD, situated 693 miles from Rio, IL and 657 miles from Cameron, MT. It would take 12 hours 7 mins to go from Rio to Murdo and 11 hours 46 mins to go from Cameron to Murdo.