| Willimantic to Smithville (Missouri) | 1,181.53 mi (1,901.49 km) |
| Willimantic to Smyrna (Delaware) | 244.68 mi (393.77 km) |
| Willimantic to Smyrna (Georgia) | 862.13 mi (1,387.47 km) |
| Willimantic to Smyrna (Tennessee) | 865.17 mi (1,392.35 km) |
| Willimantic to Snellville (Georgia) | 840.98 mi (1,353.43 km) |
| Willimantic to Snoqualmie (Washington) | 2,430.95 mi (3,912.24 km) |
| Willimantic to Snyder (Texas) | 1,687.45 mi (2,715.69 km) |
| Willimantic to Socastee (South Carolina) | 667.24 mi (1,073.81 km) |
| Willimantic to Socorro (Texas) | 1,995.53 mi (3,211.50 km) |
| Willimantic to Soddy-Daisy (Tennessee) | 829.68 mi (1,335.24 km) |
| Willimantic to Solana Beach (California) | 2,516.22 mi (4,049.47 km) |
| Willimantic to Soledad (California) | 2,624.32 mi (4,223.43 km) |
| Willimantic to Solon (Ohio) | 477.50 mi (768.45 km) |
| Willimantic to Somers Point (New Jersey) | 208.15 mi (334.99 km) |
| Willimantic to Somerset (Kentucky) | 734.41 mi (1,181.91 km) |
