Distance calculator

Great-circle distance. Enter an airport ICAO / IATA code or coordinates (for example 52.1657, 20.9671).

KMSS · Massena International Airport Richards Field → KAPN · Alpena County Regional Airport

Distance
369.9 nm
685.1 km · 425.7 mi
Course (true)
274°
Reverse course
088°
Flight time
0:50

Straight great-circle distance, not a route. Course is true, not magnetic.