| Portimao to Solofra | 1,277.76 mi (2,056.36 km) |
| Portimao to Somma Lombardo | 1,067.27 mi (1,717.60 km) |
| Portimao to Somma Vesuviana | 1,256.43 mi (2,022.02 km) |
| Portimao to Sommacampagna | 1,153.13 mi (1,855.79 km) |
| Portimao to Sona | 1,153.28 mi (1,856.03 km) |
| Portimao to Sondrio | 1,132.64 mi (1,822.81 km) |
| Portimao to Sora | 1,220.21 mi (1,963.74 km) |
| Portimao to Sorbolo | 1,120.50 mi (1,803.27 km) |
| Portimao to Soresina | 1,105.78 mi (1,779.58 km) |
| Portimao to Sorisole | 1,110.17 mi (1,786.65 km) |
| Portimao to Sorrento | 1,251.94 mi (2,014.80 km) |
| Portimao to Sorso | 951.86 mi (1,531.87 km) |
| Portimao to Sortino | 1,294.72 mi (2,083.65 km) |
| Portimao to Soverato Marina | 1,367.53 mi (2,200.83 km) |
| Portimao to Sovicille | 1,122.91 mi (1,807.14 km) |
