| Rockford to Ridgefield Park (New Jersey) | 782.80 mi (1,259.79 km) |
| Rockford to Ridgeland (Mississippi) | 682.19 mi (1,097.88 km) |
| Rockford to Ridgewood (New Jersey) | 776.26 mi (1,249.27 km) |
| Rockford to Rifle (Colorado) | 992.91 mi (1,597.94 km) |
| Rockford to Rincon (Georgia) | 811.12 mi (1,305.37 km) |
| Rockford to Ringwood (New Jersey) | 766.31 mi (1,233.25 km) |
| Rockford to Río Grande (Puerto Rico) | 2,139.54 mi (3,443.26 km) |
| Rockford to Rio Grande City (Texas) | 1,228.28 mi (1,976.73 km) |
| Rockford to Rio Linda (California) | 1,709.09 mi (2,750.52 km) |
| Rockford to Rio Rancho (New Mexico) | 1,062.22 mi (1,709.48 km) |
| Rockford to Rio Rico (Arizona) | 1,415.38 mi (2,277.83 km) |
| Rockford to Ripon (California) | 1,715.20 mi (2,760.35 km) |
| Rockford to River Edge (New Jersey) | 780.81 mi (1,256.60 km) |
| Rockford to River Falls (Wisconsin) | 253.10 mi (407.33 km) |
| Rockford to River Forest (Illinois) | 68.62 mi (110.43 km) |
