| Watford to Sucha Beskidzka | 881.70 mi (1,418.95 km) |
| Watford to Suchanino | 809.05 mi (1,302.03 km) |
| Watford to Sulechow | 682.38 mi (1,098.18 km) |
| Watford to Sulecin | 659.87 mi (1,061.96 km) |
| Watford to Sulejowek | 920.53 mi (1,481.45 km) |
| Watford to Suwalki | 982.49 mi (1,581.16 km) |
| Watford to Swarzedz | 742.49 mi (1,194.93 km) |
| Watford to Swidnica | 730.41 mi (1,175.47 km) |
| Watford to Swidnik | 991.09 mi (1,595.01 km) |
| Watford to Swidwin | 690.59 mi (1,111.40 km) |
| Watford to Swiebodzice | 723.76 mi (1,164.78 km) |
| Watford to Swiecie | 798.22 mi (1,284.61 km) |
| Watford to Swiedbodzin | 678.18 mi (1,091.42 km) |
| Watford to Swietochlowice | 843.02 mi (1,356.72 km) |
| Watford to Swinoujscie | 630.38 mi (1,014.49 km) |
