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Distance from McNamara , Montana to St Joe River , Idaho
Route Information
The driving distance from McNamara, Montana to St Joe River, Idaho is 171.5 mi (276 km)
The straight-line (air) distance is 109.5 mi (176.3 km)
The estimated flight time is 0 hr 13 min (assuming average flight speed of 500 mph)
The estimated travel time by road is 3 hours 51 minutes
Traveling mixed highways and local roads, substantial in a west direction. Average speeds around 43 mph.
Location Details
Origin:
Destination:
Journey Summary
Traveling from McNamara, Montana to St Joe River, Idaho covers 171.5 mi (276 km) in a west direction. This mixed highways and local roads, substantial route typically takes 3 hours 51 minutes under normal conditions.
Drivers have 2 route options between these locations (154.4-171.5 miles / 248-276 km). The primary route shown here saves 27 minutes compared to alternatives.
The route features scenic views, toll sections. with average speeds around 43 mph (69 km/h).
Available Routes
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.