| Willimantic to Sinop | 5,094.76 mi (8,199.23 km) |
| Willimantic to Siran | 5,332.40 mi (8,581.67 km) |
| Willimantic to Sirnak | 5,589.59 mi (8,995.57 km) |
| Willimantic to Sirvan | 5,546.14 mi (8,925.65 km) |
| Willimantic to Sivas | 5,273.13 mi (8,486.28 km) |
| Willimantic to Sivasli | 5,038.44 mi (8,108.58 km) |
| Willimantic to Siverek | 5,458.31 mi (8,784.31 km) |
| Willimantic to Sivrice | 5,424.13 mi (8,729.29 km) |
| Willimantic to Sivrihisar | 5,070.82 mi (8,160.69 km) |
| Willimantic to Sogut | 4,990.48 mi (8,031.41 km) |
| Willimantic to Sogutlu | 4,963.49 mi (7,987.96 km) |
| Willimantic to Soke | 4,975.78 mi (8,007.74 km) |
| Willimantic to Solhan | 5,464.60 mi (8,794.42 km) |
| Willimantic to Soma | 4,921.37 mi (7,920.18 km) |
| Willimantic to Sorgun | 5,199.20 mi (8,367.31 km) |
