| Caerfyrddin to Saarijarvi | 1,316.32 mi (2,118.42 km) |
| Caerfyrddin to Salo | 1,197.48 mi (1,927.16 km) |
| Caerfyrddin to Sastamala | 1,211.81 mi (1,950.22 km) |
| Caerfyrddin to Savonlinna | 1,410.12 mi (2,269.37 km) |
| Caerfyrddin to Seinajoki | 1,248.15 mi (2,008.70 km) |
| Caerfyrddin to Siilinjarvi | 1,396.13 mi (2,246.85 km) |
| Caerfyrddin to Sipoo | 1,267.86 mi (2,040.43 km) |
| Caerfyrddin to Sippola | 1,330.84 mi (2,141.79 km) |
| Caerfyrddin to Sodankyla | 1,493.42 mi (2,403.43 km) |
| Caerfyrddin to Somero | 1,215.28 mi (1,955.80 km) |
| Caerfyrddin to Sotkamo | 1,441.60 mi (2,320.04 km) |
| Caerfyrddin to Tampere | 1,241.96 mi (1,998.74 km) |
| Caerfyrddin to Tornio | 1,380.96 mi (2,222.45 km) |
| Caerfyrddin to Turku | 1,170.97 mi (1,884.49 km) |
| Caerfyrddin to Tuusula | 1,261.52 mi (2,030.21 km) |
