| Watford to Spello | 853.83 mi (1,374.11 km) |
| Watford to Spilamberto | 719.23 mi (1,157.50 km) |
| Watford to Spilimbergo | 712.39 mi (1,146.47 km) |
| Watford to Spinea | 713.07 mi (1,147.58 km) |
| Watford to Spoleto | 866.46 mi (1,394.43 km) |
| Watford to Spoltore | 930.80 mi (1,497.98 km) |
| Watford to Spresiano | 703.34 mi (1,131.92 km) |
| Watford to Squinzano | 1,170.30 mi (1,883.42 km) |
| Watford to Statte | 1,133.58 mi (1,824.31 km) |
| Watford to Stezzano | 617.43 mi (993.66 km) |
| Watford to Strada | 778.30 mi (1,252.55 km) |
| Watford to Stradella | 634.76 mi (1,021.55 km) |
| Watford to Striano | 1,031.54 mi (1,660.10 km) |
| Watford to Subiaco | 923.80 mi (1,486.72 km) |
| Watford to Sulmona | 944.76 mi (1,520.44 km) |
