| Allentown to Solofra | 4,492.82 mi (7,230.49 km) |
| Allentown to Somma Lombardo | 4,056.25 mi (6,527.90 km) |
| Allentown to Somma Vesuviana | 4,473.24 mi (7,198.98 km) |
| Allentown to Sommacampagna | 4,157.02 mi (6,690.08 km) |
| Allentown to Sona | 4,155.19 mi (6,687.14 km) |
| Allentown to Sondrio | 4,090.07 mi (6,582.34 km) |
| Allentown to Sora | 4,405.97 mi (7,090.72 km) |
| Allentown to Sorbolo | 4,158.57 mi (6,692.58 km) |
| Allentown to Soresina | 4,118.59 mi (6,628.23 km) |
| Allentown to Sorisole | 4,095.19 mi (6,590.56 km) |
| Allentown to Sorrento | 4,479.65 mi (7,209.30 km) |
| Allentown to Sorso | 4,215.01 mi (6,783.41 km) |
| Allentown to Sortino | 4,642.06 mi (7,470.67 km) |
| Allentown to Soverato Marina | 4,650.60 mi (7,484.42 km) |
| Allentown to Sovicille | 4,246.02 mi (6,833.31 km) |
