| Caerfyrddin to Sceaux | 360.56 mi (580.26 km) |
| Caerfyrddin to Schiltigheim | 577.70 mi (929.72 km) |
| Caerfyrddin to Scionzier | 634.12 mi (1,020.52 km) |
| Caerfyrddin to Seclin | 330.42 mi (531.76 km) |
| Caerfyrddin to Sedan | 430.54 mi (692.89 km) |
| Caerfyrddin to Selestat | 577.34 mi (929.14 km) |
| Caerfyrddin to Sene | 301.05 mi (484.49 km) |
| Caerfyrddin to Senlis | 353.90 mi (569.55 km) |
| Caerfyrddin to Sens | 421.32 mi (678.04 km) |
| Caerfyrddin to Septemes-les-Vallons | 736.74 mi (1,185.66 km) |
| Caerfyrddin to Serris | 375.20 mi (603.83 km) |
| Caerfyrddin to Sete | 692.00 mi (1,113.66 km) |
| Caerfyrddin to Sevran | 362.80 mi (583.87 km) |
| Caerfyrddin to Sevres | 355.80 mi (572.60 km) |
| Caerfyrddin to Seynod | 626.52 mi (1,008.29 km) |
