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Distance from Telegraph Spring to Dulles
Route Information
The driving distance from Telegraph Spring, Virginia to Dulles, Virginia is 27 mi (43.4 km)
The straight-line (air) distance is 17.0 mi (27.3 km)
The estimated flight time is 0 hr 2 min
The estimated travel time by road is 31 minutes
Traveling mixed highways and local roads, moderate in a southeast direction. Average speeds around 49 mph.
Location Details
Origin:
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Destination:
Journey Summary
Traveling from Telegraph Spring, Virginia to Dulles, Virginia covers 27 mi (43.4 km) in a southeast direction. This mixed highways and local roads, moderate route typically takes 31 minutes under normal conditions.
The route features scenic views, toll sections. with average speeds around 49 mph (79 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.