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

Distance from Grass Range, MT to Groton, SD

Distance

629 mi

Time

11 hours

Gas Cost

$59 - $114

There are 522.71 miles from Grass Range to Groton in southeast direction and 629 miles (1,012.28 kilometers) by car, following the I-94 route.

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

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

Please note the time difference between Grass Range, MT and Groton, SD is 1 hour. The current time in Grass Range is 3:07 am and the current time in Groton is 4:07 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 Groton, 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 25.27 gallons of gas to cover the route between Grass Range, MT and Groton, SD.

The estimated cost of gas to go from Grass Range to Groton is $82.43.

During the route, an average car will release 495.06 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 Groton, SD

If you want to meet halfway between Grass Range, MT and Groton, SD or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 46.89059 and -102.943044, or 46º 53' 26.124" N, 102º 56' 34.9584" W. This location is 314.59 miles away from Grass Range, MT and Groton, SD and it would take approximately 5 hours 30 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is South Heart, ND, situated 303 miles from Grass Range, MT and 329 miles from Groton, SD. It would take 5 hours 24 mins to go from Grass Range to South Heart and 5 hours 45 mins to go from Groton to South Heart.