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

Distance from Grass Range, MT to Saint Onge, SD

Distance

365 mi

Time

6 hours 59 mins

Gas Cost

$34 - $66

There are 298.82 miles from Grass Range to Saint Onge in southeast direction and 365 miles (587.41 kilometers) by car, following the US-212 and MT 59 route.

Grass Range and Saint Onge are 6 hours 59 mins far apart, if you drive non-stop .

This is the fastest route from Grass Range, MT to Saint Onge, SD. The halfway point is Sheridan, WY.

Grass Range, MT and Saint Onge, SD are in the same time zone (MDT). Current time in both locations is 3:01 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 Saint Onge, 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 14.65 gallons of gas to cover the route between Grass Range, MT and Saint Onge, SD.

The estimated cost of gas to go from Grass Range to Saint Onge is $47.79.

During the route, an average car will release 287.05 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 Saint Onge, SD

If you want to meet halfway between Grass Range, MT and Saint Onge, SD or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 44.740929 and -106.908241, or 44º 44' 27.3444" N, 106º 54' 29.6676" W. This location is 182.41 miles away from Grass Range, MT and Saint Onge, SD and it would take approximately 3 hours 29 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Sheridan, WY, situated 220 miles from Grass Range, MT and 209 miles from Saint Onge, SD. It would take 4 hours 35 mins to go from Grass Range to Sheridan and 3 hours 5 mins to go from Saint Onge to Sheridan.