Distance between cities › USA › Illinois › McCook, IL › Distance from McCook to Decker Book Hotels

Distance from McCook, IL to Decker, MT

Distance

1,172 mi

Time

20 hours 29 mins

Gas Cost

$109 - $212

There are 978.08 miles from McCook to Decker in northwest direction and 1,172 miles (1,886.15 kilometers) by car, following the I-90 route.

McCook and Decker are 20 hours 29 mins far apart, if you drive non-stop .

This is the fastest route from McCook, IL to Decker, MT.

Please note the time difference between McCook, IL and Decker, MT is 1 hour. The current time in McCook is 6:06 pm and the current time in Decker is 5:06 pm.

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Lowest Price Rental Cars in McCook, IL

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

Small

From $14

Intermediate

From $18

Full-size

From $24

SUVs

From $28

Vans

From $40

Compare rental car prices in McCook »

Gas Consumption and Emissions

A car with a fuel efficiency of MPG will need 47.09 gallons of gas to cover the route between McCook, IL and Decker, MT.

The estimated cost of gas to go from McCook to Decker is $153.60.

During the route, an average car will release 922.53 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 McCook, IL and Decker, MT

If you want to meet halfway between McCook, IL and Decker, MT or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 43.666757 and -97.143826, or 43º 40' 0.3252" N, 97º 8' 37.7736" W. This location is 586.23 miles away from McCook, IL and Decker, MT and it would take approximately 10 hours 14 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 597 miles from McCook, IL and 579 miles from Decker, MT. It would take 11 hours 2 mins to go from McCook to Montrose and 9 hours 39 mins to go from Decker to Montrose.

Major City Closest to Halfway Point

The major city closest to the halfway point between McCook, IL and Decker, MT is Sioux Falls, SD, situated 576 miles from McCook, IL and 606 miles from Decker, MT. It would take 10 hours 42 mins to go from McCook to Sioux Falls and 10 hours 5 mins to go from Decker to Sioux Falls.