| Watertown Town to Sinop | 5,025.15 mi (8,087.20 km) |
| Watertown Town to Siran | 5,262.82 mi (8,469.70 km) |
| Watertown Town to Sirnak | 5,520.01 mi (8,883.59 km) |
| Watertown Town to Sirvan | 5,476.57 mi (8,813.69 km) |
| Watertown Town to Sivas | 5,203.50 mi (8,374.22 km) |
| Watertown Town to Sivasli | 4,968.97 mi (7,996.78 km) |
| Watertown Town to Siverek | 5,388.68 mi (8,672.24 km) |
| Watertown Town to Sivrice | 5,354.50 mi (8,617.24 km) |
| Watertown Town to Sivrihisar | 5,001.23 mi (8,048.70 km) |
| Watertown Town to Sogut | 4,920.91 mi (7,919.44 km) |
| Watertown Town to Sogutlu | 4,893.88 mi (7,875.93 km) |
| Watertown Town to Soke | 4,906.49 mi (7,896.23 km) |
| Watertown Town to Solhan | 5,395.03 mi (8,682.46 km) |
| Watertown Town to Soma | 4,851.95 mi (7,808.45 km) |
| Watertown Town to Sorgun | 5,129.56 mi (8,255.24 km) |
