| Caerfyrddin to Senftenberg | 783.57 mi (1,261.03 km) |
| Caerfyrddin to Siegburg | 502.13 mi (808.11 km) |
| Caerfyrddin to Siegen | 535.53 mi (861.86 km) |
| Caerfyrddin to Sigmaringen | 654.06 mi (1,052.60 km) |
| Caerfyrddin to Simbach am Inn | 805.53 mi (1,296.38 km) |
| Caerfyrddin to Simmerath | 467.00 mi (751.56 km) |
| Caerfyrddin to Sindelfingen | 625.71 mi (1,006.99 km) |
| Caerfyrddin to Sinsheim | 605.78 mi (974.91 km) |
| Caerfyrddin to Sinzheim | 589.92 mi (949.38 km) |
| Caerfyrddin to Sinzig | 508.37 mi (818.14 km) |
| Caerfyrddin to Soest | 531.64 mi (855.59 km) |
| Caerfyrddin to Solingen | 491.98 mi (791.76 km) |
| Caerfyrddin to Soltau | 600.29 mi (966.07 km) |
| Caerfyrddin to Sommerda | 664.14 mi (1,068.84 km) |
| Caerfyrddin to Sondershausen | 651.13 mi (1,047.89 km) |
