Map of flight path and driving directions from Cedar Rapids to Rockford.
Shortest flight path between The Eastern Iowa Airport (CID) and Chicago Rockford International Airport (RFD).
How far is Rockford from Cedar Rapids?
There are several ways to calculate distances between Cedar Rapids and Rockford. Here are two common methods:Vincenty's formula (applied above)
- 136.160 miles
- 219.128 kilometers
- 118.320 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
- 135.816 miles
- 218.575 kilometers
- 118.021 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).
Time difference and current local times
There is no time difference between Cedar Rapids and Rockford.
Cedar Rapids, IA
Carbon dioxide emissions
Estimated CO2 emissions per passenger is 45 kg (99 pounds).
Frequent Flyer Miles Calculator
Cedar Rapids (CID) → Rockford (RFD).