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

Distance from Harrison, SD to Fromberg, MT

Distance

630 mi

Time

11 hours 7 mins

Gas Cost

$59 - $114

There are 529.52 miles from Harrison to Fromberg in northwest direction and 630 miles (1,013.89 kilometers) by car, following the I-90 route.

Harrison and Fromberg are 11 hours 7 mins far apart, if you drive non-stop .

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

Please note the time difference between Harrison, SD and Fromberg, MT is 1 hour. The current time in Harrison is 6:34 am and the current time in Fromberg is 5:34 am.

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Lowest Price Rental Cars in Harrison, SD

Planning on renting a car to go from Harrison, SD to Fromberg, 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 25.29 gallons of gas to cover the route between Harrison, SD and Fromberg, MT.

The estimated cost of gas to go from Harrison to Fromberg is $82.50.

During the route, an average car will release 495.51 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 Fromberg, MT

If you want to meet halfway between Harrison, SD and Fromberg, MT or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 44.507991 and -103.677788, or 44º 30' 28.7676" N, 103º 40' 40.0368" W. This location is 314.88 miles away from Harrison, SD and Fromberg, MT and it would take approximately 5 hours 33 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Saint Onge, SD, situated 318 miles from Harrison, SD and 311 miles from Fromberg, MT. It would take 5 hours 22 mins to go from Harrison to Saint Onge and 5 hours 46 mins to go from Fromberg to Saint Onge.