| Romeoville to Sonneberg | 4,438.05 mi (7,142.36 km) |
| Romeoville to Sonsbeck | 4,216.21 mi (6,785.33 km) |
| Romeoville to Sonthofen | 4,518.39 mi (7,271.65 km) |
| Romeoville to Spaichingen | 4,437.53 mi (7,141.52 km) |
| Romeoville to Spelle | 4,228.09 mi (6,804.46 km) |
| Romeoville to Spenge | 4,273.06 mi (6,876.83 km) |
| Romeoville to Speyer | 4,377.71 mi (7,045.24 km) |
| Romeoville to Spiesen-Elversberg | 4,329.03 mi (6,966.90 km) |
| Romeoville to Spremberg | 4,502.26 mi (7,245.69 km) |
| Romeoville to Springe | 4,307.86 mi (6,932.83 km) |
| Romeoville to Sprockhovel | 4,256.94 mi (6,850.88 km) |
| Romeoville to Stade | 4,253.32 mi (6,845.05 km) |
| Romeoville to Stadtallendorf | 4,341.32 mi (6,986.68 km) |
| Romeoville to Stadthagen | 4,291.63 mi (6,906.72 km) |
| Romeoville to Stadtlohn | 4,221.86 mi (6,794.43 km) |
