| Castalla to Soham | 950.37 mi (1,529.47 km) |
| Castalla to Solihull | 956.09 mi (1,538.68 km) |
| Castalla to Sompting | 845.41 mi (1,360.56 km) |
| Castalla to South Hayling | 842.44 mi (1,355.78 km) |
| Castalla to South Normanton | 1,003.07 mi (1,614.29 km) |
| Castalla to South Ockendon | 894.19 mi (1,439.05 km) |
| Castalla to South Shields | 1,133.56 mi (1,824.30 km) |
| Castalla to Southall | 892.48 mi (1,436.31 km) |
| Castalla to Southampton | 851.00 mi (1,369.55 km) |
| Castalla to Southborough | 869.22 mi (1,398.87 km) |
| Castalla to Southbourne | 839.58 mi (1,351.17 km) |
| Castalla to Southend | 897.48 mi (1,444.35 km) |
| Castalla to Southgate | 901.01 mi (1,450.03 km) |
| Castalla to Southport | 1,045.75 mi (1,682.98 km) |
| Castalla to Southwater | 858.77 mi (1,382.05 km) |
