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Distance from Harper to Radium
Route Information
The driving distance from Harper, Kansas to Radium, Kansas is 121 mi (194.7 km)
The straight-line (air) distance is 77.5 mi (124.7 km)
The estimated flight time is 0 hr 9 min
The estimated travel time by road is 2 hours 2 minutes
Traveling highway, substantial in a northwest direction. Average speeds around 64 mph.
Location Details
Origin:
Destination:
Journey Summary
Traveling from Harper, Kansas to Radium, Kansas covers 121 mi (194.7 km) in a northwest direction. This highway, substantial route typically takes 2 hours 2 minutes under normal conditions.
Drivers have 2 route options between these locations (106.2-121.0 miles / 171-195 km). The primary route shown here saves 19 minutes compared to alternatives.
The route features scenic views along the way. with average speeds around 64 mph (103 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.