Distance between cities › USA › South Dakota › Harrison, SD › Distance from Harrison to Harrison Book Hotels

Distance from Harrison, SD to Harrison, MT

Distance

786 mi

Time

13 hours 39 mins

Gas Cost

$73 - $142

There are 670.38 miles from Harrison to Harrison in northwest direction and 786 miles (1,264.94 kilometers) by car, following the I-90 route.

Harrison and Harrison are 13 hours 39 mins far apart, if you drive non-stop .

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

Please note the time difference between Harrison, SD and Harrison, MT is 1 hour. The current time in Harrison is 6:33 am and the current time in Harrison is 5:33 am.

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Lowest Price Rental Cars in Harrison, SD

Planning on renting a car to go from Harrison, SD to Harrison, MT? Here there are some offers to rent a car in Harrison, SD

Small

From $14

Intermediate

From $18

Full-size

From $24

SUVs

From $28

Vans

From $40

Compare rental car prices in Harrison »

Gas Consumption and Emissions

A car with a fuel efficiency of MPG will need 31.57 gallons of gas to cover the route between Harrison, SD and Harrison, MT.

The estimated cost of gas to go from Harrison to Harrison is $102.99.

During the route, an average car will release 618.58 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 Harrison, SD and Harrison, MT

If you want to meet halfway between Harrison, SD and Harrison, MT or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 45.23381 and -104.956744, or 45º 14' 1.716" N, 104º 57' 24.2784" W. This location is 393.08 miles away from Harrison, SD and Harrison, MT and it would take approximately 6 hours 49 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Hammond, MT, situated 396 miles from Harrison, SD and 390 miles from Harrison, MT. It would take 6 hours 53 mins to go from Harrison to Hammond and 6 hours 45 mins to go from Harrison to Hammond.