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Distance from Atkinson Building to Portsmouth
Route Information
The driving distance from Atkinson Building, Maine to Portsmouth, New Hampshire is 84.3 mi (135.6 km)
The straight-line (air) distance is 75.7 mi (121.9 km)
The estimated flight time is 0 hr 9 min
The estimated travel time by road is 1 hour 21 minutes
Traveling highway, substantial in a southwest direction. Average speeds around 63 mph.
Location Details
Origin:
Destination:
Journey Summary
Traveling from Atkinson Building, Maine to Portsmouth, New Hampshire covers 84.3 mi (135.6 km) in a southwest direction. This highway, substantial route typically takes 1 hour 21 minutes under normal conditions.
Drivers have 3 route options between these locations (82.7-86.9 miles / 133-140 km). The primary route shown here saves 10 minutes compared to alternatives.
The route features scenic views, toll sections. with average speeds around 63 mph (101 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.