| Rockford to Ramsey (New Jersey) | 773.55 mi (1,244.90 km) |
| Rockford to Rancho Cordova (California) | 1,701.97 mi (2,739.06 km) |
| Rockford to Rancho Cucamonga (California) | 1,637.36 mi (2,635.07 km) |
| Rockford to Rancho Mirage (California) | 1,592.40 mi (2,562.72 km) |
| Rockford to Rancho Palos Verdes (California) | 1,689.67 mi (2,719.26 km) |
| Rockford to Rancho San Diego (California) | 1,652.07 mi (2,658.76 km) |
| Rockford to Rancho Santa Margarita (California) | 1,655.47 mi (2,664.23 km) |
| Rockford to Randallstown (Maryland) | 670.78 mi (1,079.51 km) |
| Rockford to Rantoul (Illinois) | 143.18 mi (230.43 km) |
| Rockford to Rapid City (South Dakota) | 723.37 mi (1,164.15 km) |
| Rockford to Ravenna (Ohio) | 410.36 mi (660.41 km) |
| Rockford to Raymondville (Texas) | 1,196.79 mi (1,926.04 km) |
| Rockford to Raymore (Missouri) | 370.39 mi (596.08 km) |
| Rockford to Raytown (Missouri) | 361.93 mi (582.47 km) |
| Rockford to Reading (Ohio) | 320.45 mi (515.72 km) |
