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Distance from Grant to Interior
Route Information
The driving distance from Grant, Iowa to Interior, South Dakota is 512.5 mi (824.8 km)
The straight-line (air) distance is 399.7 mi (643.2 km)
The estimated flight time is 0 hr 48 min
The estimated travel time by road is 7 hours 23 minutes
Traveling highway, long-distance in a west direction. Average speeds around 61 mph.
Location Details
Origin:
No image available
Destination:
Journey Summary
Traveling from Grant, Iowa to Interior, South Dakota covers 512.5 mi (824.8 km) in a west direction. This highway, long-distance route typically takes 7 hours 23 minutes under normal conditions.
Drivers have 3 route options between these locations (486.8-534.8 miles / 783-861 km). The primary route shown here saves 27 minutes compared to alternatives.
The route features scenic views, toll sections. with average speeds around 61 mph (98 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.