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Distance from Duncombe to Ionia
Route Information
The driving distance from Duncombe, Iowa to Ionia, Iowa is 114.9 mi (184.9 km)
The straight-line (air) distance is 87.3 mi (140.6 km)
The estimated flight time is 0 hr 11 min
The estimated travel time by road is 1 hour 58 minutes
Traveling highway, substantial in a east direction. Average speeds around 59 mph.
Location Details
Origin:
Destination:
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Journey Summary
Traveling from Duncombe, Iowa to Ionia, Iowa covers 114.9 mi (184.9 km) in a east direction. This highway, substantial route typically takes 1 hour 58 minutes under normal conditions.
Drivers have 3 route options between these locations (112.7-134.0 miles / 181-216 km). The primary route shown here saves 13 minutes compared to alternatives.
The route features scenic views along the way. with average speeds around 59 mph (95 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.