How far is Watertown, SD, from Alpena, MI?

The distance between Alpena (Alpena County Regional Airport) and Watertown (Watertown Regional Airport) is 665 miles / 1071 kilometers / 578 nautical miles.

The driving distance from Alpena (APN) to Watertown (ATY) is 816 miles / 1313 kilometers, and travel time by car is about 17 hours 17 minutes.

Distance from Alpena to Watertown

There are several ways to calculate the distance from Alpena to Watertown. 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 Alpena to Watertown?

The estimated flight time from Alpena County Regional Airport to Watertown Regional Airport is 1 hour and 45 minutes.

What is the time difference between Alpena and Watertown?

The time difference between Alpena and Watertown is 1 hour. Watertown is 1 hour behind Alpena.

Flight carbon footprint between Alpena County Regional Airport (APN) and Watertown Regional Airport (ATY)

On average, flying from Alpena to Watertown 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 Alpena to Watertown

See the map of the shortest flight path between Alpena County Regional Airport (APN) and Watertown Regional Airport (ATY).

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	Watertown Regional Airport
City:	Watertown, SD
Country:	United States
IATA Code:	ATY
ICAO Code:	KATY
Coordinates:	44°54′50″N, 97°9′16″W