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

Distance from Grass Range, MT to Hamill, SD

Distance

620 mi

Time

11 hours 24 mins

Gas Cost

$58 - $112

There are 502.29 miles from Grass Range to Hamill in southeast direction and 620 miles (997.79 kilometers) by car, following the I-90 and US-14 and US-16 Truck and SD 79 route.

Grass Range and Hamill are 11 hours 24 mins far apart, if you drive non-stop .

This is the fastest route from Grass Range, MT to Hamill, SD.

Please note the time difference between Grass Range, MT and Hamill, SD is 1 hour. The current time in Grass Range is 1:40 am and the current time in Hamill is 2:40 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 Hamill, SD? 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 24.91 gallons of gas to cover the route between Grass Range, MT and Hamill, SD.

The estimated cost of gas to go from Grass Range to Hamill is $81.26.

During the route, an average car will release 488.07 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 Grass Range, MT and Hamill, SD

If you want to meet halfway between Grass Range, MT and Hamill, SD or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 45.045247 and -104.445781, or 45º 2' 42.8892" N, 104º 26' 44.8116" W. This location is 310.15 miles away from Grass Range, MT and Hamill, SD and it would take approximately 5 hours 42 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Alzada, MT, situated 316 miles from Grass Range, MT and 305 miles from Hamill, SD. It would take 6 hours to go from Grass Range to Alzada and 5 hours 24 mins to go from Hamill to Alzada.