# Distance between Rock Springs, WY (RKS) and Alpena, MI (APN)

Flight distance from Rock Springs to Alpena (Southwest Wyoming Regional Airport – Alpena County Regional Airport) is 1302 miles / 2095 kilometers / 1131 nautical miles. Estimated flight time is 2 hours 57 minutes.

Driving distance from Rock Springs (RKS) to Alpena (APN) is 1614 miles / 2597 kilometers and travel time by car is about 27 hours 32 minutes.

## Map of flight path and driving directions from Rock Springs to Alpena.

Shortest flight path between Southwest Wyoming Regional Airport (RKS) and Alpena County Regional Airport (APN).

## How far is Alpena from Rock Springs?

There are several ways to calculate distances between Rock Springs and Alpena. Here are two common methods:

Vincenty's formula (applied above)
• 1301.820 miles
• 2095.076 kilometers
• 1131.250 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
• 1298.473 miles
• 2089.689 kilometers
• 1128.342 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 Southwest Wyoming Regional Airport
City: Rock Springs, WY
Country: United States
IATA Code: RKS
ICAO Code: KRKS
Coordinates: 41°35′39″N, 109°3′54″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 Rock Springs and Alpena is 2 hours. Alpena is 2 hours ahead of Rock Springs.

MDT

EDT

## Carbon dioxide emissions

Estimated CO2 emissions per passenger is 167 kg (368 pounds).

## Frequent Flyer Miles Calculator

Rock Springs (RKS) → Alpena (APN).

Distance:
1302
Elite level bonus:
0
Booking class bonus:
0

### In total

Total frequent flyer miles:
1302

Round trip?