| Watford to Sosnowiec | 852.40 mi (1,371.81 km) |
| Watford to Srem | 741.55 mi (1,193.40 km) |
| Watford to Sroda Slaska | 731.03 mi (1,176.49 km) |
| Watford to Sroda Wielkopolska | 752.15 mi (1,210.48 km) |
| Watford to Stalowa Wola | 972.68 mi (1,565.38 km) |
| Watford to Starachowice | 923.72 mi (1,486.59 km) |
| Watford to Stargard Szczecinski | 658.66 mi (1,060.01 km) |
| Watford to Starogard Gdanski | 803.94 mi (1,293.82 km) |
| Watford to Stary Sacz | 930.12 mi (1,496.89 km) |
| Watford to Staszow | 934.97 mi (1,504.69 km) |
| Watford to Strzegom | 723.04 mi (1,163.62 km) |
| Watford to Strzelce Krajenskie | 677.34 mi (1,090.08 km) |
| Watford to Strzelce Opolskie | 812.51 mi (1,307.61 km) |
| Watford to Strzelin | 756.28 mi (1,217.12 km) |
| Watford to Strzyzow | 973.04 mi (1,565.96 km) |
