| Watford to Stanmore | 4.34 mi (6.98 km) |
| Watford to Stannington | 129.49 mi (208.39 km) |
| Watford to Stansted Mountfitchet | 30.43 mi (48.97 km) |
| Watford to Stanwell | 14.06 mi (22.63 km) |
| Watford to Stapleford | 95.53 mi (153.74 km) |
| Watford to Staveley | 118.53 mi (190.76 km) |
| Watford to Stepney | 17.84 mi (28.72 km) |
| Watford to Stevenage | 18.95 mi (30.50 km) |
| Watford to Stevenston | 328.36 mi (528.45 km) |
| Watford to Stirling | 340.22 mi (547.53 km) |
| Watford to Stockport | 141.79 mi (228.20 km) |
| Watford to Stocksbridge | 135.54 mi (218.13 km) |
| Watford to Stockton-on-Tees | 205.02 mi (329.94 km) |
| Watford to Stoke Gifford | 92.89 mi (149.49 km) |
| Watford to Stoke-on-Trent | 119.72 mi (192.66 km) |
