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Distance from Green Grass to Thatcher
Route Information
The driving distance from Green Grass, South Dakota to Thatcher, South Dakota is 26 mi (41.8 km)
The straight-line (air) distance is 18.7 mi (30.0 km)
The estimated flight time is 0 hr 2 min
The estimated travel time by road is 25 minutes
Traveling highway, moderate in a southeast direction. Average speeds around 64 mph.
Location Details
Origin:
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Destination:
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Journey Summary
Traveling from Green Grass, South Dakota to Thatcher, South Dakota covers 26 mi (41.8 km) in a southeast direction. This highway, moderate route typically takes 25 minutes under normal conditions.
The route features scenic views along the way. with average speeds around 64 mph (103 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.