Distance between cities › USA › Montana › Grass Range, MT › Distance from Grass Range to Avalon Book Hotels

Distance from Grass Range, MT to Avalon, MO

Distance

1,138 mi

Time

20 hours 12 mins

Gas Cost

$95 - $185

There are 922.15 miles from Grass Range to Avalon in southeast direction and 1,138 miles (1,831.43 kilometers) by car, following the I-29 route.

Grass Range and Avalon are 20 hours 12 mins far apart, if you drive non-stop .

This is the fastest route from Grass Range, MT to Avalon, MO. The halfway point is Okaton, SD.

Please note the time difference between Grass Range, MT and Avalon, MO is 1 hour. The current time in Grass Range is 12:17 am and the current time in Avalon is 1:17 am.

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Lowest Price Rental Cars in Grass Range, MT

Planning on renting a car to go from Grass Range, MT to Avalon, MO? Here there are some offers to rent a car in Grass Range, MT

Small

From $14

Intermediate

From $18

Full-size

From $24

SUVs

From $28

Vans

From $40

Compare rental car prices in Grass Range »

Gas Consumption and Emissions

A car with a fuel efficiency of MPG will need 45.71 gallons of gas to cover the route between Grass Range, MT and Avalon, MO.

The estimated cost of gas to go from Grass Range to Avalon is $133.46.

During the route, an average car will release 895.46 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 $2.92 per gallon of regular gas. Price last updated on March 12, 2026.
Read more about our CO₂ calculation.

Halfway Point Between Grass Range, MT and Avalon, MO

If you want to meet halfway between Grass Range, MT and Avalon, MO or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 43.883747 and -100.820534, or 43º 53' 1.4892" N, 100º 49' 13.9224" W. This location is 569.03 miles away from Grass Range, MT and Avalon, MO and it would take approximately 10 hours 6 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Okaton, SD, situated 588 miles from Grass Range, MT and 607 miles from Avalon, MO. It would take 9 hours 38 mins to go from Grass Range to Okaton and 8 hours 43 mins to go from Avalon to Okaton.