| Watford to Sacile | 704.66 mi (1,134.05 km) |
| Watford to Sala Consilina | 1,087.92 mi (1,750.83 km) |
| Watford to Salemi | 1,150.94 mi (1,852.26 km) |
| Watford to Salerno | 1,045.18 mi (1,682.06 km) |
| Watford to Salo | 650.05 mi (1,046.16 km) |
| Watford to Salsomaggiore Terme | 670.61 mi (1,079.24 km) |
| Watford to Saluzzo | 604.84 mi (973.40 km) |
| Watford to Salzano | 709.65 mi (1,142.07 km) |
| Watford to Samarate | 590.52 mi (950.35 km) |
| Watford to San Benedetto del Tronto | 896.77 mi (1,443.21 km) |
| Watford to San Biagio di Callalta | 712.49 mi (1,146.64 km) |
| Watford to San Bonifacio | 685.88 mi (1,103.83 km) |
| Watford to San Casciano in Val di Pesa | 770.19 mi (1,239.50 km) |
| Watford to San Cataldo | 1,203.49 mi (1,936.83 km) |
| Watford to San Cesareo | 920.55 mi (1,481.48 km) |
