| Williamstown to Sinop | 5,296.41 mi (8,523.74 km) |
| Williamstown to Siran | 5,534.06 mi (8,906.22 km) |
| Williamstown to Sirnak | 5,791.25 mi (9,320.11 km) |
| Williamstown to Sirvan | 5,747.80 mi (9,250.20 km) |
| Williamstown to Sivas | 5,474.73 mi (8,810.72 km) |
| Williamstown to Sivasli | 5,238.86 mi (8,431.13 km) |
| Williamstown to Siverek | 5,659.89 mi (9,108.72 km) |
| Williamstown to Sivrice | 5,625.75 mi (9,053.76 km) |
| Williamstown to Sivrihisar | 5,271.82 mi (8,484.18 km) |
| Williamstown to Sogut | 5,191.42 mi (8,354.78 km) |
| Williamstown to Sogutlu | 5,164.66 mi (8,311.71 km) |
| Williamstown to Soke | 5,175.41 mi (8,329.02 km) |
| Williamstown to Solhan | 5,666.26 mi (9,118.96 km) |
| Williamstown to Soma | 5,121.59 mi (8,242.40 km) |
| Williamstown to Sorgun | 5,400.69 mi (8,691.57 km) |
