# Distance between Casper, WY (CPR) and Eau Claire, WI (EAU)

Flight distance from Casper to Eau Claire (Casper–Natrona County International Airport – Chippewa Valley Regional Airport) is 759 miles / 1221 kilometers / 660 nautical miles. Estimated flight time is 1 hour 56 minutes.

Driving distance from Casper (CPR) to Eau Claire (EAU) is 920 miles / 1480 kilometers and travel time by car is about 15 hours 31 minutes.

## Map of flight path and driving directions from Casper to Eau Claire.

Shortest flight path between Casper–Natrona County International Airport (CPR) and Chippewa Valley Regional Airport (EAU).

## How far is Eau Claire from Casper?

There are several ways to calculate distances between Casper and Eau Claire. Here are two common methods:

Vincenty's formula (applied above)
• 758.941 miles
• 1221.397 kilometers
• 659.502 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
• 756.957 miles
• 1218.204 kilometers
• 657.778 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 Chippewa Valley Regional Airport
City: Eau Claire, WI
Country: United States
IATA Code: EAU
ICAO Code: KEAU
Coordinates: 44°51′56″N, 91°29′3″W

## Time difference and current local times

The time difference between Casper and Eau Claire is 1 hour. Eau Claire is 1 hour ahead of Casper.

MDT

CDT

## Carbon dioxide emissions

Estimated CO2 emissions per passenger is 131 kg (288 pounds).

## Frequent Flyer Miles Calculator

Casper (CPR) → Eau Claire (EAU).

Distance:
759
Elite level bonus:
0
Booking class bonus:
0

### In total

Total frequent flyer miles:
759

Round trip?