| Allentown to Sestu | 4,291.36 mi (6,906.28 km) |
| Allentown to Settimo Torinese | 4,033.91 mi (6,491.94 km) |
| Allentown to Seveso | 4,076.19 mi (6,560.00 km) |
| Allentown to Sezze | 4,389.85 mi (7,064.79 km) |
| Allentown to Siano | 4,487.16 mi (7,221.39 km) |
| Allentown to Siena | 4,249.05 mi (6,838.19 km) |
| Allentown to Signa | 4,222.87 mi (6,796.06 km) |
| Allentown to Silea | 4,209.35 mi (6,774.30 km) |
| Allentown to Silvi Paese | 4,397.05 mi (7,076.37 km) |
| Allentown to Sinalunga | 4,270.04 mi (6,871.96 km) |
| Allentown to Siniscola | 4,273.36 mi (6,877.31 km) |
| Allentown to Sinnai | 4,296.34 mi (6,914.29 km) |
| Allentown to Siracusa | 4,657.41 mi (7,495.38 km) |
| Allentown to Solaro | 4,074.84 mi (6,557.81 km) |
| Allentown to Soliera | 4,182.58 mi (6,731.21 km) |
