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

Distance from Grass Range, MT to Harrison, SD

Distance

683 mi

Time

12 hours 21 mins

Gas Cost

$64 - $124

There are 557.86 miles from Grass Range to Harrison in southeast direction and 683 miles (1,099.18 kilometers) by car, following the I-90 and US-14 and US-16 Truck and SD 79 route.

Grass Range and Harrison are 12 hours 21 mins far apart, if you drive non-stop .

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

Please note the time difference between Grass Range, MT and Harrison, SD is 1 hour. The current time in Grass Range is 1:41 am and the current time in Harrison is 2:41 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 Harrison, 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 27.43 gallons of gas to cover the route between Grass Range, MT and Harrison, SD.

The estimated cost of gas to go from Grass Range to Harrison is $89.48.

During the route, an average car will release 537.43 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 Harrison, SD

If you want to meet halfway between Grass Range, MT and Harrison, SD or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 44.735504 and -103.934478, or 44º 44' 7.8144" N, 103º 56' 4.1208" W. This location is 341.52 miles away from Grass Range, MT and Harrison, SD and it would take approximately 6 hours 10 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Belle Fourche, SD, situated 353 miles from Grass Range, MT and 331 miles from Harrison, SD. It would take 6 hours 43 mins to go from Grass Range to Belle Fourche and 5 hours 38 mins to go from Harrison to Belle Fourche.