| Willoughby to Solofra | 4,705.75 mi (7,573.17 km) |
| Willoughby to Somma Lombardo | 4,261.33 mi (6,857.94 km) |
| Willoughby to Somma Vesuviana | 4,686.82 mi (7,542.71 km) |
| Willoughby to Sommacampagna | 4,359.57 mi (7,016.06 km) |
| Willoughby to Sona | 4,357.64 mi (7,012.94 km) |
| Willoughby to Sondrio | 4,291.10 mi (6,905.86 km) |
| Willoughby to Sora | 4,617.99 mi (7,431.93 km) |
| Willoughby to Sorbolo | 4,364.12 mi (7,023.37 km) |
| Willoughby to Soresina | 4,323.35 mi (6,957.76 km) |
| Willoughby to Sorisole | 4,298.41 mi (6,917.62 km) |
| Willoughby to Sorrento | 4,694.25 mi (7,554.67 km) |
| Willoughby to Sorso | 4,439.70 mi (7,145.01 km) |
| Willoughby to Sortino | 4,867.51 mi (7,833.51 km) |
| Willoughby to Soverato Marina | 4,867.85 mi (7,834.05 km) |
| Willoughby to Sovicille | 4,456.43 mi (7,171.94 km) |
