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

Distance from Harrison, SD to Acton, MT

Distance

608 mi

Time

10 hours 45 mins

Gas Cost

$56 - $108

There are 527.46 miles from Harrison to Acton in northwest direction and 608 miles (978.48 kilometers) by car, following the I-90 route.

Harrison and Acton are 10 hours 45 mins far apart, if you drive non-stop .

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

Please note the time difference between Harrison, SD and Acton, MT is 1 hour. The current time in Harrison is 12:50 am (Mar 12) and the current time in Acton is 11:50 pm (Mar 11).

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Lowest Price Rental Cars in Harrison, SD

Planning on renting a car to go from Harrison, SD to Acton, 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 24.42 gallons of gas to cover the route between Harrison, SD and Acton, MT.

The estimated cost of gas to go from Harrison to Acton is $78.24.

During the route, an average car will release 478.42 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 $3.20 per gallon of regular gas. Price last updated on March 11, 2026.
Read more about our CO₂ calculation.

Halfway Point Between Harrison, SD and Acton, MT

If you want to meet halfway between Harrison, SD and Acton, MT or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 44.414162 and -103.52824, or 44º 24' 50.9832" N, 103º 31' 41.664" W. This location is 304.02 miles away from Harrison, SD and Acton, MT and it would take approximately 5 hours 22 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Sturgis, SD, situated 304 miles from Harrison, SD and 305 miles from Acton, MT. It would take 5 hours 6 mins to go from Harrison to Sturgis and 5 hours 41 mins to go from Acton to Sturgis.