How far is Alpena, MI, from Great Falls, MT?
The distance between Great Falls (Great Falls International Airport) and Alpena (Alpena County Regional Airport) is 1335 miles / 2148 kilometers / 1160 nautical miles.
The driving distance from Great Falls (GTF) to Alpena (APN) is 1504 miles / 2421 kilometers, and travel time by car is about 29 hours 50 minutes.
Great Falls International Airport – Alpena County Regional Airport
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Distance from Great Falls to Alpena
There are several ways to calculate the distance from Great Falls to Alpena. 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 Great Falls to Alpena?
The estimated flight time from Great Falls International Airport to Alpena County Regional Airport is 3 hours and 1 minutes.
What is the time difference between Great Falls and Alpena?
Flight carbon footprint between Great Falls International Airport (GTF) and Alpena County Regional Airport (APN)
On average, flying from Great Falls to Alpena 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 Great Falls to Alpena
See the map of the shortest flight path between Great Falls International Airport (GTF) and Alpena County Regional Airport (APN).
Airport information
| Origin | 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 |
| Destination | 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 |