How far is Alpena, MI, from Watertown, SD?
The distance between Watertown (Watertown Regional Airport) and Alpena (Alpena County Regional Airport) is 665 miles / 1071 kilometers / 578 nautical miles.
The driving distance from Watertown (ATY) to Alpena (APN) is 815 miles / 1312 kilometers, and travel time by car is about 17 hours 15 minutes.
Watertown Regional Airport – Alpena County Regional Airport
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Distance from Watertown to Alpena
There are several ways to calculate the distance from Watertown to Alpena. Here are two standard methods:
Vincenty's formula (applied above)- 665.391 miles
- 1070.843 kilometers
- 578.209 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- 663.535 miles
- 1067.855 kilometers
- 576.596 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 Watertown to Alpena?
The estimated flight time from Watertown Regional Airport to Alpena County Regional Airport is 1 hour and 45 minutes.
What is the time difference between Watertown and Alpena?
The time difference between Watertown and Alpena is 1 hour. Alpena is 1 hour ahead of Watertown.
Flight carbon footprint between Watertown Regional Airport (ATY) and Alpena County Regional Airport (APN)
On average, flying from Watertown to Alpena generates about 121 kg of CO2 per passenger, and 121 kilograms equals 266 pounds (lbs). The figures are estimates and include only the CO2 generated by burning jet fuel.
Map of flight path and driving directions from Watertown to Alpena
See the map of the shortest flight path between Watertown Regional Airport (ATY) and Alpena County Regional Airport (APN).
Airport information
| Origin | Watertown Regional Airport |
|---|---|
| City: | Watertown, SD |
| Country: | United States  |
| IATA Code: | ATY |
| ICAO Code: | KATY |
| Coordinates: | 44°54′50″N, 97°9′16″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 |