| Castalla to Solofra | 838.09 mi (1,348.77 km) |
| Castalla to Somma Lombardo | 684.83 mi (1,102.12 km) |
| Castalla to Somma Vesuviana | 816.89 mi (1,314.65 km) |
| Castalla to Sommacampagna | 754.30 mi (1,213.93 km) |
| Castalla to Sona | 754.94 mi (1,214.96 km) |
| Castalla to Sondrio | 749.22 mi (1,205.76 km) |
| Castalla to Sora | 783.61 mi (1,261.09 km) |
| Castalla to Sorbolo | 716.74 mi (1,153.48 km) |
| Castalla to Soresina | 710.55 mi (1,143.52 km) |
| Castalla to Sorisole | 722.17 mi (1,162.22 km) |
| Castalla to Sorrento | 811.93 mi (1,306.68 km) |
| Castalla to Sorso | 514.34 mi (827.75 km) |
| Castalla to Sortino | 861.02 mi (1,385.67 km) |
| Castalla to Soverato Marina | 928.02 mi (1,493.50 km) |
| Castalla to Sovicille | 699.70 mi (1,126.06 km) |
