# Distance between St Louis, MO (STL) and Eau Claire, WI (EAU)

Flight distance from St Louis to Eau Claire (St. Louis Lambert International Airport – Chippewa Valley Regional Airport) is 426 miles / 686 kilometers / 370 nautical miles. Estimated flight time is 1 hour 18 minutes.

Driving distance from St Louis (STL) to Eau Claire (EAU) is 543 miles / 874 kilometers and travel time by car is about 9 hours 28 minutes.

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

Shortest flight path between St. Louis Lambert International Airport (STL) and Chippewa Valley Regional Airport (EAU).

## How far is Eau Claire from St Louis?

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

Vincenty's formula (applied above)
• 426.065 miles
• 685.685 kilometers
• 370.240 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
• 426.517 miles
• 686.413 kilometers
• 370.633 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 St. Louis Lambert International Airport
City: St Louis, MO
Country: United States
IATA Code: STL
ICAO Code: KSTL
Coordinates: 38°44′55″N, 90°22′12″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

There is no time difference between St Louis and Eau Claire.

CST

CST

## Carbon dioxide emissions

Estimated CO2 emissions per passenger is 88 kg (193 pounds).

## Frequent Flyer Miles Calculator

St Louis (STL) → Eau Claire (EAU).

Distance:
426
Elite level bonus:
0
Booking class bonus:
0

### In total

Total frequent flyer miles:
426

Round trip?