| Caerfyrddin to Sonneberg | 678.40 mi (1,091.78 km) |
| Caerfyrddin to Sonsbeck | 457.48 mi (736.24 km) |
| Caerfyrddin to Sonthofen | 716.46 mi (1,153.03 km) |
| Caerfyrddin to Spaichingen | 635.07 mi (1,022.04 km) |
| Caerfyrddin to Spelle | 500.65 mi (805.72 km) |
| Caerfyrddin to Spenge | 544.15 mi (875.73 km) |
| Caerfyrddin to Speyer | 585.11 mi (941.64 km) |
| Caerfyrddin to Spiesen-Elversberg | 531.33 mi (855.10 km) |
| Caerfyrddin to Spremberg | 798.38 mi (1,284.87 km) |
| Caerfyrddin to Springe | 588.98 mi (947.87 km) |
| Caerfyrddin to Sprockhovel | 496.88 mi (799.65 km) |
| Caerfyrddin to Stade | 588.57 mi (947.20 km) |
| Caerfyrddin to Stadtallendorf | 578.91 mi (931.66 km) |
| Caerfyrddin to Stadthagen | 574.15 mi (924.01 km) |
| Caerfyrddin to Stadtlohn | 478.17 mi (769.54 km) |
