| Castleford to Solofra | 1,164.63 mi (1,874.30 km) |
| Castleford to Somma Lombardo | 712.72 mi (1,147.02 km) |
| Castleford to Somma Vesuviana | 1,150.18 mi (1,851.04 km) |
| Castleford to Sommacampagna | 791.24 mi (1,273.39 km) |
| Castleford to Sona | 788.95 mi (1,269.69 km) |
| Castleford to Sondrio | 720.18 mi (1,159.02 km) |
| Castleford to Sora | 1,078.00 mi (1,734.87 km) |
| Castleford to Sorbolo | 809.46 mi (1,302.71 km) |
| Castleford to Soresina | 767.83 mi (1,235.70 km) |
| Castleford to Sorisole | 737.13 mi (1,186.29 km) |
| Castleford to Sorrento | 1,162.36 mi (1,870.64 km) |
| Castleford to Sorso | 1,004.55 mi (1,616.67 km) |
| Castleford to Sortino | 1,385.10 mi (2,229.10 km) |
| Castleford to Soverato Marina | 1,338.27 mi (2,153.74 km) |
| Castleford to Sovicille | 920.11 mi (1,480.78 km) |
