Map of flight path and driving directions from St Louis to Alpena.
Shortest flight path between St. Louis Lambert International Airport (STL) and Alpena County Regional Airport (APN).
How far is Alpena from St Louis?
There are several ways to calculate distances between St Louis and Alpena. Here are two common methods:Vincenty's formula (applied above)
- 559.967 miles
- 901.180 kilometers
- 486.598 nautical miles
Vincenty's formula calculates the distance between latitude/longitude points on the earth’s surface, using an ellipsoidal model of the earth.Haversine formula
- 559.775 miles
- 900.871 kilometers
- 486.431 nautical miles
The haversine formula calculates the distance between latitude/longitude points assuming a spherical earth (great-circle distance – the shortest distance between two points).
Time difference and current local times
The time difference between St Louis and Alpena is 1 hour. Alpena is 1 hour ahead of St Louis.
St Louis, MO
Carbon dioxide emissions
Estimated CO2 emissions per passenger is 107 kg (237 pounds).
Frequent Flyer Miles Calculator
St Louis (STL) → Alpena (APN).