How far is Great Falls, MT, from Alpena, MI?
The distance between Alpena (Alpena County Regional Airport) and Great Falls (Great Falls International Airport) is 1335 miles / 2148 kilometers / 1160 nautical miles.
The driving distance from Alpena (APN) to Great Falls (GTF) is 1505 miles / 2422 kilometers, and travel time by car is about 29 hours 51 minutes.
Alpena County Regional Airport – Great Falls International Airport
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Distance from Alpena to Great Falls
There are several ways to calculate the distance from Alpena to Great Falls. Here are two standard methods:
Vincenty's formula (applied above)- 1334.906 miles
- 2148.323 kilometers
- 1160.001 nautical miles
Vincenty's formula calculates the distance between latitude/longitude points on the earth's surface using an ellipsoidal model of the planet.
Haversine formula- 1331.148 miles
- 2142.275 kilometers
- 1156.736 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).
How long does it take to fly from Alpena to Great Falls?
The estimated flight time from Alpena County Regional Airport to Great Falls International Airport is 3 hours and 1 minutes.
What is the time difference between Alpena and Great Falls?
The time difference between Alpena and Great Falls is 2 hours. Great Falls is 2 hours behind Alpena.
Flight carbon footprint between Alpena County Regional Airport (APN) and Great Falls International Airport (GTF)
On average, flying from Alpena to Great Falls generates about 169 kg of CO2 per passenger, and 169 kilograms equals 373 pounds (lbs). The figures are estimates and include only the CO2 generated by burning jet fuel.
Map of flight path and driving directions from Alpena to Great Falls
See the map of the shortest flight path between Alpena County Regional Airport (APN) and Great Falls International Airport (GTF).
Airport information
| Origin | Alpena County Regional Airport |
|---|---|
| City: | Alpena, MI |
| Country: | United States  |
| IATA Code: | APN |
| ICAO Code: | KAPN |
| Coordinates: | 45°4′41″N, 83°33′37″W |
| Destination | Great Falls International Airport |
|---|---|
| City: | Great Falls, MT |
| Country: | United States |
| IATA Code: | GTF |
| ICAO Code: | KGTF |
| Coordinates: | 47°28′55″N, 111°22′15″W |