| Rockford to Storm Lake (Iowa) | 313.66 mi (504.79 km) |
| Rockford to Storrs (Connecticut) | 861.97 mi (1,387.20 km) |
| Rockford to Stoughton (Wisconsin) | 46.59 mi (74.98 km) |
| Rockford to Stow (Ohio) | 400.39 mi (644.37 km) |
| Rockford to Streamwood (Illinois) | 48.30 mi (77.73 km) |
| Rockford to Streator (Illinois) | 79.35 mi (127.71 km) |
| Rockford to Streetsboro (Ohio) | 403.91 mi (650.03 km) |
| Rockford to Strongsville (Ohio) | 378.19 mi (608.64 km) |
| Rockford to Stuart (Florida) | 1,153.43 mi (1,856.26 km) |
| Rockford to Stuarts Draft (Virginia) | 604.78 mi (973.29 km) |
| Rockford to Sturgis (Michigan) | 189.77 mi (305.41 km) |
| Rockford to Suamico (Wisconsin) | 171.58 mi (276.13 km) |
| Rockford to Sudley (Virginia) | 652.51 mi (1,050.11 km) |
| Rockford to Suffern (New York) | 773.00 mi (1,244.02 km) |
| Rockford to Suffolk (Virginia) | 764.92 mi (1,231.02 km) |
