| Romeoville to Santa Ursula | 4,036.71 mi (6,496.45 km) |
| Romeoville to Santander | 4,095.50 mi (6,591.06 km) |
| Romeoville to Santany | 4,550.86 mi (7,323.90 km) |
| Romeoville to Santiago de Compostela | 3,906.62 mi (6,287.10 km) |
| Romeoville to Santiago del Teide | 4,025.33 mi (6,478.14 km) |
| Romeoville to Santiponce | 4,209.99 mi (6,775.32 km) |
| Romeoville to Santomera | 4,415.44 mi (7,105.96 km) |
| Romeoville to Santona | 4,111.31 mi (6,616.51 km) |
| Romeoville to Santurce-Antiguo | 4,133.64 mi (6,652.46 km) |
| Romeoville to Sarria | 3,959.95 mi (6,372.92 km) |
| Romeoville to Sauzal | 4,037.45 mi (6,497.64 km) |
| Romeoville to Sedavi | 4,392.98 mi (7,069.82 km) |
| Romeoville to Segorbe | 4,372.18 mi (7,036.34 km) |
| Romeoville to Segovia | 4,170.31 mi (6,711.46 km) |
| Romeoville to Senmanat | 4,419.86 mi (7,113.07 km) |
