| Watertown Town to Selargius | 4,042.22 mi (6,505.33 km) |
| Watertown Town to Selvazzano Dentro | 3,944.64 mi (6,348.28 km) |
| Watertown Town to Senago | 3,825.18 mi (6,156.03 km) |
| Watertown Town to Senigallia | 4,063.47 mi (6,539.52 km) |
| Watertown Town to Seravezza | 3,924.73 mi (6,316.25 km) |
| Watertown Town to Seregno | 3,825.89 mi (6,157.17 km) |
| Watertown Town to Seriate | 3,846.87 mi (6,190.95 km) |
| Watertown Town to Sermoneta | 4,130.76 mi (6,647.82 km) |
| Watertown Town to Serramanna | 4,025.25 mi (6,478.01 km) |
| Watertown Town to Serravalle Pistoiese | 3,954.13 mi (6,363.56 km) |
| Watertown Town to Sessa Aurunca | 4,184.11 mi (6,733.68 km) |
| Watertown Town to Sesto Calende | 3,798.98 mi (6,113.86 km) |
| Watertown Town to Sesto Fiorentino | 3,972.29 mi (6,392.78 km) |
| Watertown Town to Sesto San Giovanni | 3,831.07 mi (6,165.51 km) |
| Watertown Town to Sestri Levante | 3,879.14 mi (6,242.87 km) |
