| Seaford to Smyrna (Delaware) | 3,614.31 mi (5,816.66 km) |
| Seaford to Smyrna (Georgia) | 4,232.40 mi (6,811.38 km) |
| Seaford to Smyrna (Tennessee) | 4,213.45 mi (6,780.89 km) |
| Seaford to Snellville (Georgia) | 4,211.58 mi (6,777.88 km) |
| Seaford to Snoqualmie (Washington) | 4,822.06 mi (7,760.35 km) |
| Seaford to Snyder (Texas) | 4,941.49 mi (7,952.56 km) |
| Seaford to Socastee (South Carolina) | 4,011.35 mi (6,455.64 km) |
| Seaford to Socorro (Texas) | 5,199.02 mi (8,367.01 km) |
| Seaford to Soddy-Daisy (Tennessee) | 4,192.56 mi (6,747.27 km) |
| Seaford to Solana Beach (California) | 5,509.71 mi (8,867.03 km) |
| Seaford to Soledad (California) | 5,442.48 mi (8,758.82 km) |
| Seaford to Solon (Ohio) | 3,759.61 mi (6,050.51 km) |
| Seaford to Somers Point (New Jersey) | 3,571.74 mi (5,748.16 km) |
| Seaford to Somerset (Kentucky) | 4,083.23 mi (6,571.32 km) |
| Seaford to Somerset (New Jersey) | 3,516.01 mi (5,658.47 km) |
