How far is Rockford, IL, from Green Bay, WI?
The distance between Green Bay (Green Bay–Austin Straubel International Airport) and Rockford (Chicago Rockford International Airport) is 165 miles / 266 kilometers / 144 nautical miles.
The driving distance from Green Bay (GRB) to Rockford (RFD) is 195 miles / 314 kilometers, and travel time by car is about 3 hours 58 minutes.
Green Bay–Austin Straubel International Airport – Chicago Rockford International Airport
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Distance from Green Bay to Rockford
There are several ways to calculate the distance from Green Bay to Rockford. Here are two standard methods:
Vincenty's formula (applied above)- 165.411 miles
- 266.204 kilometers
- 143.739 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- 165.503 miles
- 266.351 kilometers
- 143.818 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 Green Bay to Rockford?
The estimated flight time from Green Bay–Austin Straubel International Airport to Chicago Rockford International Airport is 48 minutes.
What is the time difference between Green Bay and Rockford?
Flight carbon footprint between Green Bay–Austin Straubel International Airport (GRB) and Chicago Rockford International Airport (RFD)
On average, flying from Green Bay to Rockford generates about 49 kg of CO2 per passenger, and 49 kilograms equals 109 pounds (lbs). The figures are estimates and include only the CO2 generated by burning jet fuel.
Map of flight path and driving directions from Green Bay to Rockford
See the map of the shortest flight path between Green Bay–Austin Straubel International Airport (GRB) and Chicago Rockford International Airport (RFD).
Airport information
| Origin | Green Bay–Austin Straubel International Airport |
|---|---|
| City: | Green Bay, WI |
| Country: | United States  |
| IATA Code: | GRB |
| ICAO Code: | KGRB |
| Coordinates: | 44°29′6″N, 88°7′46″W |
| Destination | Chicago Rockford International Airport |
|---|---|
| City: | Rockford, IL |
| Country: | United States |
| IATA Code: | RFD |
| ICAO Code: | KRFD |
| Coordinates: | 42°11′43″N, 89°5′49″W |