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 → KMTC · Selfridge Air National Guard Base Airport

Distance
373.3 nm
691.4 km · 429.6 mi
Course (true)
251°
Reverse course
065°
Flight time
0:51

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