| Richardson to Solofra | 5,731.84 mi (9,224.51 km) |
| Richardson to Somma Lombardo | 5,284.80 mi (8,505.07 km) |
| Richardson to Somma Vesuviana | 5,713.17 mi (9,194.46 km) |
| Richardson to Sommacampagna | 5,381.70 mi (8,661.00 km) |
| Richardson to Sona | 5,379.71 mi (8,657.81 km) |
| Richardson to Sondrio | 5,312.59 mi (8,549.79 km) |
| Richardson to Sora | 5,643.84 mi (9,082.88 km) |
| Richardson to Sorbolo | 5,387.63 mi (8,670.56 km) |
| Richardson to Soresina | 5,346.58 mi (8,604.49 km) |
| Richardson to Sorisole | 5,320.96 mi (8,563.25 km) |
| Richardson to Sorrento | 5,720.95 mi (9,206.98 km) |
| Richardson to Sorso | 5,469.07 mi (8,801.62 km) |
| Richardson to Sortino | 5,896.85 mi (9,490.07 km) |
| Richardson to Soverato Marina | 5,895.25 mi (9,487.49 km) |
| Richardson to Sovicille | 5,481.86 mi (8,822.21 km) |
