| Holyhead to Sucha Beskidzka | 1,064.45 mi (1,713.07 km) |
| Holyhead to Suchanino | 945.99 mi (1,522.42 km) |
| Holyhead to Sulechow | 849.26 mi (1,366.74 km) |
| Holyhead to Sulecin | 822.85 mi (1,324.26 km) |
| Holyhead to Sulejowek | 1,079.59 mi (1,737.43 km) |
| Holyhead to Suwalki | 1,121.44 mi (1,804.79 km) |
| Holyhead to Swarzedz | 904.08 mi (1,454.98 km) |
| Holyhead to Swidnica | 909.09 mi (1,463.04 km) |
| Holyhead to Swidnik | 1,157.63 mi (1,863.02 km) |
| Holyhead to Swidwin | 835.24 mi (1,344.18 km) |
| Holyhead to Swiebodzice | 902.53 mi (1,452.48 km) |
| Holyhead to Swiecie | 946.92 mi (1,523.93 km) |
| Holyhead to Swiedbodzin | 843.16 mi (1,356.93 km) |
| Holyhead to Swietochlowice | 1,022.66 mi (1,645.81 km) |
| Holyhead to Swinoujscie | 772.83 mi (1,243.75 km) |
