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

Distance from Harrison, SD to Gardiner, MT

Distance

762 mi

Time

13 hours 19 mins

Gas Cost

$71 - $138

There are 612.40 miles from Harrison to Gardiner in west direction and 762 miles (1,226.32 kilometers) by car, following the I-90 route.

Harrison and Gardiner are 13 hours 19 mins far apart, if you drive non-stop .

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

Please note the time difference between Harrison, SD and Gardiner, MT is 1 hour. The current time in Harrison is 3:38 am and the current time in Gardiner is 2:38 am.

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Lowest Price Rental Cars in Harrison, SD

Planning on renting a car to go from Harrison, SD to Gardiner, 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 30.61 gallons of gas to cover the route between Harrison, SD and Gardiner, MT.

The estimated cost of gas to go from Harrison to Gardiner is $99.84.

During the route, an average car will release 599.64 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 Gardiner, MT

If you want to meet halfway between Harrison, SD and Gardiner, MT or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 45.139953 and -104.692067, or 45º 8' 23.8308" N, 104º 41' 31.4412" W. This location is 381.05 miles away from Harrison, SD and Gardiner, MT and it would take approximately 6 hours 40 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 366 miles from Gardiner, MT. It would take 6 hours 53 mins to go from Harrison to Hammond and 6 hours 26 mins to go from Gardiner to Hammond.