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

Distance from Harrison, SD to Harlem, MT

Distance

795 mi

Time

15 hours 5 mins

Gas Cost

$74 - $144

There are 604.85 miles from Harrison to Harlem in northwest direction and 795 miles (1,279.43 kilometers) by car, following the I-90 route.

Harrison and Harlem are 15 hours 5 mins far apart, if you drive non-stop .

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

Please note the time difference between Harrison, SD and Harlem, MT is 1 hour. The current time in Harrison is 6:35 am and the current time in Harlem is 5:35 am.

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Lowest Price Rental Cars in Harrison, SD

Planning on renting a car to go from Harrison, SD to Harlem, 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 31.93 gallons of gas to cover the route between Harrison, SD and Harlem, MT.

The estimated cost of gas to go from Harrison to Harlem is $104.14.

During the route, an average car will release 625.50 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 Harrison, SD and Harlem, MT

If you want to meet halfway between Harrison, SD and Harlem, MT or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 45.136134 and -104.683857, or 45º 8' 10.0824" N, 104º 41' 1.8852" W. This location is 397.48 miles away from Harrison, SD and Harlem, MT and it would take approximately 7 hours 32 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 399 miles from Harlem, MT. It would take 6 hours 53 mins to go from Harrison to Hammond and 8 hours 11 mins to go from Harlem to Hammond.