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Distance from Grindstone to Hartley
Route Information
The driving distance from Grindstone, South Dakota to Hartley, South Dakota is 47.5 mi (76.5 km)
The straight-line (air) distance is 19.7 mi (31.7 km)
The estimated flight time is 0 hr 2 min
The estimated travel time by road is 46 minutes
Traveling highway, moderate in a northeast direction. Average speeds around 60 mph.
Location Details
Origin:
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Destination:
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Journey Summary
Traveling from Grindstone, South Dakota to Hartley, South Dakota covers 47.5 mi (76.5 km) in a northeast direction. This highway, moderate route typically takes 46 minutes under normal conditions.
The route features scenic views along the way. with average speeds around 60 mph (97 km/h).
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.