Distance between Casper, WY (CPR) and Alpena, MI (APN)
Flight distance from Casper to Alpena (Casper–Natrona County International Airport – Alpena County Regional Airport) is 1147 miles / 1847 kilometers / 997 nautical miles. Estimated flight time is 2 hours 40 minutes.
Driving distance from Casper (CPR) to Alpena (APN) is 1438 miles / 2315 kilometers and travel time by car is about 25 hours 47 minutes.
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Casper - Alpena
Map of flight path and driving directions from Casper to Alpena.
Shortest flight path between Casper–Natrona County International Airport (CPR) and Alpena County Regional Airport (APN).
How far is Alpena from Casper?
There are several ways to calculate distances between Casper and Alpena. Here are two common methods:
Vincenty's formula (applied above)- 1147.473 miles
- 1846.679 kilometers
- 997.127 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- 1144.407 miles
- 1841.744 kilometers
- 994.462 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).
Airport information
| A | Casper–Natrona County International Airport |
|---|---|
| City: | Casper, WY |
| Country: | United States  |
| IATA Code: | CPR |
| ICAO Code: | KCPR |
| Coordinates: | 42°54′28″N, 106°27′50″W |
| B | 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 |
Time difference and current local times
The time difference between Casper and Alpena is 2 hours. Alpena is 2 hours ahead of Casper.
Time Difference
Casper, WY
Alpena, MI
Carbon dioxide emissions
Estimated CO2 emissions per passenger is 159 kg (351 pounds).
Frequent Flyer Miles Calculator
Casper (CPR) → Alpena (APN).
In total
Round trip?