| Castelo Branco to Solofra | 1,176.20 mi (1,892.92 km) |
| Castelo Branco to Somma Lombardo | 914.16 mi (1,471.21 km) |
| Castelo Branco to Somma Vesuviana | 1,154.48 mi (1,857.96 km) |
| Castelo Branco to Sommacampagna | 1,006.83 mi (1,620.34 km) |
| Castelo Branco to Sona | 1,006.69 mi (1,620.12 km) |
| Castelo Branco to Sondrio | 978.60 mi (1,574.91 km) |
| Castelo Branco to Sora | 1,109.97 mi (1,786.32 km) |
| Castelo Branco to Sorbolo | 977.87 mi (1,573.73 km) |
| Castelo Branco to Soresina | 958.38 mi (1,542.36 km) |
| Castelo Branco to Sorisole | 958.84 mi (1,543.10 km) |
| Castelo Branco to Sorrento | 1,152.35 mi (1,854.53 km) |
| Castelo Branco to Sorso | 848.61 mi (1,365.71 km) |
| Castelo Branco to Sortino | 1,228.91 mi (1,977.75 km) |
| Castelo Branco to Soverato Marina | 1,285.31 mi (2,068.51 km) |
| Castelo Branco to Sovicille | 995.50 mi (1,602.10 km) |
