| Letchworth to Sucha Beskidzka | 875.22 mi (1,408.53 km) |
| Letchworth to Suchanino | 794.74 mi (1,279.01 km) |
| Letchworth to Sulechow | 672.33 mi (1,082.01 km) |
| Letchworth to Sulecin | 649.07 mi (1,044.58 km) |
| Letchworth to Sulejowek | 909.55 mi (1,463.78 km) |
| Letchworth to Suwalki | 968.71 mi (1,558.99 km) |
| Letchworth to Swarzedz | 731.64 mi (1,177.46 km) |
| Letchworth to Swidnica | 722.80 mi (1,163.24 km) |
| Letchworth to Swidnik | 981.46 mi (1,579.51 km) |
| Letchworth to Swidwin | 677.04 mi (1,089.59 km) |
| Letchworth to Swiebodzice | 716.17 mi (1,152.56 km) |
| Letchworth to Swiecie | 785.47 mi (1,264.09 km) |
| Letchworth to Swiedbodzin | 667.78 mi (1,074.68 km) |
| Letchworth to Swietochlowice | 835.80 mi (1,345.09 km) |
| Letchworth to Swinoujscie | 616.36 mi (991.94 km) |
