| Watford to Saarijarvi | 1,213.09 mi (1,952.28 km) |
| Watford to Salo | 1,081.12 mi (1,739.89 km) |
| Watford to Sastamala | 1,102.50 mi (1,774.31 km) |
| Watford to Savonlinna | 1,297.37 mi (2,087.91 km) |
| Watford to Seinajoki | 1,149.23 mi (1,849.50 km) |
| Watford to Siilinjarvi | 1,292.29 mi (2,079.74 km) |
| Watford to Sipoo | 1,148.98 mi (1,849.10 km) |
| Watford to Sippola | 1,212.67 mi (1,951.60 km) |
| Watford to Sodankyla | 1,418.67 mi (2,283.14 km) |
| Watford to Somero | 1,100.14 mi (1,770.51 km) |
| Watford to Sotkamo | 1,343.70 mi (2,162.48 km) |
| Watford to Tampere | 1,132.53 mi (1,822.63 km) |
| Watford to Tornio | 1,300.43 mi (2,092.84 km) |
| Watford to Turku | 1,056.21 mi (1,699.81 km) |
| Watford to Tuusula | 1,143.24 mi (1,839.87 km) |
