| Rockford to Roy (Utah) | 1,184.21 mi (1,905.81 km) |
| Rockford to Royal Kunia (Hawaii) | 4,178.75 mi (6,725.04 km) |
| Rockford to Royal Oak (Michigan) | 302.05 mi (486.11 km) |
| Rockford to Royal Palm Beach (Florida) | 1,185.22 mi (1,907.42 km) |
| Rockford to Royse City (Texas) | 753.64 mi (1,212.86 km) |
| Rockford to Ruskin (Florida) | 1,072.64 mi (1,726.25 km) |
| Rockford to Russellville (Alabama) | 540.60 mi (870.01 km) |
| Rockford to Russellville (Arkansas) | 529.91 mi (852.81 km) |
| Rockford to Ruston (Louisiana) | 699.89 mi (1,126.37 km) |
| Rockford to Rutherford (New Jersey) | 778.92 mi (1,253.55 km) |
| Rockford to Rutland (Vermont) | 817.73 mi (1,316.00 km) |
| Rockford to Sabana Grande (Puerto Rico) | 2,115.36 mi (3,404.34 km) |
| Rockford to Sachse (Texas) | 761.44 mi (1,225.42 km) |
| Rockford to Saco (Maine) | 943.66 mi (1,518.68 km) |
| Rockford to Sacramento (California) | 1,713.13 mi (2,757.02 km) |
