| Rockford to Sesimbra | 4,057.58 mi (6,530.04 km) |
| Rockford to Setubal | 4,064.21 mi (6,540.72 km) |
| Rockford to Sever do Vouga | 4,009.45 mi (6,452.58 km) |
| Rockford to Silves | 4,134.11 mi (6,653.21 km) |
| Rockford to Sines | 4,086.18 mi (6,576.08 km) |
| Rockford to Sintra | 4,031.49 mi (6,488.05 km) |
| Rockford to Sobrado de Paiva | 4,003.42 mi (6,442.89 km) |
| Rockford to Sobral de Monte Agraco | 4,034.53 mi (6,492.95 km) |
| Rockford to Soure | 4,021.49 mi (6,471.97 km) |
| Rockford to Tabua | 4,037.85 mi (6,498.29 km) |
| Rockford to Tavira | 4,173.35 mi (6,716.36 km) |
| Rockford to Tomar | 4,047.35 mi (6,513.59 km) |
| Rockford to Tondela | 4,029.87 mi (6,485.44 km) |
| Rockford to Torre de Moncorvo | 4,048.31 mi (6,515.12 km) |
| Rockford to Torres Novas | 4,046.81 mi (6,512.70 km) |
