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

Distance from Harrison, SD to Havre, MT

Distance

838 mi

Time

15 hours 55 mins

Gas Cost

$78 - $152

There are 640.88 miles from Harrison to Havre in northwest direction and 838 miles (1,348.63 kilometers) by car, following the I-90 route.

Harrison and Havre are 15 hours 55 mins far apart, if you drive non-stop .

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

Please note the time difference between Harrison, SD and Havre, MT is 1 hour. The current time in Harrison is 6:39 am and the current time in Havre is 5:39 am.

Any questions or tips to share?

Share with fellow travellers any question or tips about the route from Harrison, SD to Havre, MT:

Lowest Price Rental Cars in Harrison, SD

Planning on renting a car to go from Harrison, SD to Havre, 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 33.64 gallons of gas to cover the route between Harrison, SD and Havre, MT.

The estimated cost of gas to go from Harrison to Havre is $109.73.

During the route, an average car will release 659.06 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 Havre, MT

If you want to meet halfway between Harrison, SD and Havre, MT or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 45.301907 and -105.104982, or 45º 18' 6.8652" N, 105º 6' 17.9352" W. This location is 418.81 miles away from Harrison, SD and Havre, MT and it would take approximately 7 hours 57 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Boyes, MT, situated 403 miles from Harrison, SD and 435 miles from Havre, MT. It would take 7 hours 1 min to go from Harrison to Boyes and 8 hours 54 mins to go from Havre to Boyes.