| Caerphilly to Senftenberg | 738.82 mi (1,189.01 km) |
| Caerphilly to Siegburg | 454.11 mi (730.82 km) |
| Caerphilly to Siegen | 487.95 mi (785.28 km) |
| Caerphilly to Sigmaringen | 603.40 mi (971.07 km) |
| Caerphilly to Simbach am Inn | 755.70 mi (1,216.19 km) |
| Caerphilly to Simmerath | 418.23 mi (673.08 km) |
| Caerphilly to Sindelfingen | 575.32 mi (925.89 km) |
| Caerphilly to Sinsheim | 555.80 mi (894.48 km) |
| Caerphilly to Sinzheim | 539.40 mi (868.08 km) |
| Caerphilly to Sinzig | 459.80 mi (739.97 km) |
| Caerphilly to Soest | 485.92 mi (782.01 km) |
| Caerphilly to Solingen | 444.85 mi (715.92 km) |
| Caerphilly to Soltau | 559.35 mi (900.19 km) |
| Caerphilly to Sommerda | 618.00 mi (994.58 km) |
| Caerphilly to Sondershausen | 605.41 mi (974.31 km) |
