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Distance from Iris to Potomac

Driving Distance
40.9 mi 65.8 km
Flying Distance
11.1 mi 17.9 km

Route Information

The driving distance from Iris, Montana to Potomac, Montana is 40.9 mi (65.8 km)

The straight-line (air) distance is 11.1 mi (17.9 km)

The estimated flight time is 0 hr 1 min

The estimated travel time by road is 39 minutes

Traveling highway, moderate in a north direction. Average speeds around 65 mph.

Location Details

Origin:


No image available
Place Iris
State/Province Montana
Country US
Latitude 46.725483
Longitude -113.637314
GPS 46.725483° N, 113.637314° W
Local Time 9:58 PM
Timezone America/Denver

Destination:


No image available
Place Potomac
State/Province Montana
Country US
Latitude 46.881597
Longitude -113.579533
GPS 46.881597° N, 113.579533° W
Local Time 9:58 PM
Timezone America/Denver

Journey Summary

Traveling from Iris, Montana to Potomac, Montana covers 40.9 mi (65.8 km) in a north direction. This highway, moderate route typically takes 39 minutes under normal conditions.

Drivers have 2 route options between these locations (39.0-40.9 miles / 63-66 km). The primary route shown here saves 44 seconds compared to alternatives.

The route features scenic views along the way. with average speeds around 65 mph (105 km/h).

Available Routes

I-90 E, I-90 W and MT-200 E
40.9 mi 39 minutes
Shortest
I-90 W and MT-200 E
39 mi 38 minutes
Fastest

How is the distance calculated?

Driving distances are based on actual road data. We use advanced routing algorithms that consider traffic, tolls, highways, and local streets. For air distances (as the crow flies), we use the Vincenty formula. It's a precise method that accounts for the Earth's shape and provides accuracy up to 0.5 mm.

When multiple route options exist, we display both the shortest and fastest paths. Travel times are estimated based on typical speeds for each road type, though actual times may vary with traffic and weather conditions. All distances are shown in both miles and kilometers for convenience.