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

Distance from Grass Range, MT to Sinai, SD

Distance

801 mi

Time

13 hours 31 mins

Gas Cost

$75 - $145

There are 599.26 miles from Grass Range to Sinai in southeast direction and 801 miles (1,289.08 kilometers) by car, following the I-94 route.

Grass Range and Sinai are 13 hours 31 mins far apart, if you drive non-stop .

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

Please note the time difference between Grass Range, MT and Sinai, SD is 1 hour. The current time in Grass Range is 3:16 am and the current time in Sinai is 4:16 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 Sinai, 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 32.18 gallons of gas to cover the route between Grass Range, MT and Sinai, SD.

The estimated cost of gas to go from Grass Range to Sinai is $104.98.

During the route, an average car will release 630.50 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 Sinai, SD

If you want to meet halfway between Grass Range, MT and Sinai, SD or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 46.861176 and -101.404765, or 46º 51' 40.2336" N, 101º 24' 17.154" W. This location is 400.66 miles away from Grass Range, MT and Sinai, SD and it would take approximately 6 hours 45 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is New Salem, ND, situated 379 miles from Grass Range, MT and 425 miles from Sinai, SD. It would take 6 hours 35 mins to go from Grass Range to New Salem and 7 hours 3 mins to go from Sinai to New Salem.