| Webster Groves to Solofra | 5,207.04 mi (8,379.93 km) |
| Webster Groves to Somma Lombardo | 4,759.20 mi (7,659.20 km) |
| Webster Groves to Somma Vesuviana | 5,188.49 mi (8,350.07 km) |
| Webster Groves to Sommacampagna | 4,855.80 mi (7,814.66 km) |
| Webster Groves to Sona | 4,853.81 mi (7,811.45 km) |
| Webster Groves to Sondrio | 4,786.60 mi (7,703.29 km) |
| Webster Groves to Sora | 5,118.95 mi (8,238.15 km) |
| Webster Groves to Sorbolo | 4,862.03 mi (7,824.68 km) |
| Webster Groves to Soresina | 4,820.91 mi (7,758.51 km) |
| Webster Groves to Sorisole | 4,795.15 mi (7,717.05 km) |
| Webster Groves to Sorrento | 5,196.44 mi (8,362.86 km) |
| Webster Groves to Sorso | 4,947.07 mi (7,961.53 km) |
| Webster Groves to Sortino | 5,374.70 mi (8,649.74 km) |
| Webster Groves to Soverato Marina | 5,371.12 mi (8,643.99 km) |
| Webster Groves to Sovicille | 4,956.83 mi (7,977.25 km) |
