Air Miles Calculator logo

How far is Rock Springs, WY, from Casper, WY?

The distance between Casper (Casper–Natrona County International Airport) and Rock Springs (Southwest Wyoming Regional Airport) is 161 miles / 260 kilometers / 140 nautical miles.

The driving distance from Casper (CPR) to Rock Springs (RKS) is 227 miles / 365 kilometers, and travel time by car is about 4 hours 45 minutes.

Casper–Natrona County International Airport – Southwest Wyoming Regional Airport

Distance arrow
161
Miles
Distance arrow
260
Kilometers
Distance arrow
140
Nautical miles

Search flights

Distance from Casper to Rock Springs

There are several ways to calculate the distance from Casper to Rock Springs. Here are two standard methods:

Vincenty's formula (applied above)
  • 161.269 miles
  • 259.537 kilometers
  • 140.139 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
  • 161.032 miles
  • 259.156 kilometers
  • 139.933 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 Casper to Rock Springs?

The estimated flight time from Casper–Natrona County International Airport to Southwest Wyoming Regional Airport is 48 minutes.

What is the time difference between Casper and Rock Springs?

There is no time difference between Casper and Rock Springs.

Flight carbon footprint between Casper–Natrona County International Airport (CPR) and Southwest Wyoming Regional Airport (RKS)

On average, flying from Casper to Rock Springs generates about 49 kg of CO2 per passenger, and 49 kilograms equals 107 pounds (lbs). The figures are estimates and include only the CO2 generated by burning jet fuel.

Map of flight path and driving directions from Casper to Rock Springs

See the map of the shortest flight path between Casper–Natrona County International Airport (CPR) and Southwest Wyoming Regional Airport (RKS).

Airport information

Origin Casper–Natrona County International Airport
City: Casper, WY
Country: United States Flag of United States
IATA Code: CPR
ICAO Code: KCPR
Coordinates: 42°54′28″N, 106°27′50″W
Destination Southwest Wyoming Regional Airport
City: Rock Springs, WY
Country: United States Flag of United States
IATA Code: RKS
ICAO Code: KRKS
Coordinates: 41°35′39″N, 109°3′54″W