| Seal Beach to Smyrna (Delaware) | 2,366.65 mi (3,808.76 km) |
| Seal Beach to Smyrna (Georgia) | 1,917.65 mi (3,086.16 km) |
| Seal Beach to Smyrna (Tennessee) | 1,787.16 mi (2,876.16 km) |
| Seal Beach to Snellville (Georgia) | 1,946.77 mi (3,133.03 km) |
| Seal Beach to Snoqualmie (Washington) | 971.76 mi (1,563.89 km) |
| Seal Beach to Snyder (Texas) | 993.16 mi (1,598.34 km) |
| Seal Beach to Socastee (South Carolina) | 2,231.07 mi (3,590.57 km) |
| Seal Beach to Socorro (Texas) | 701.72 mi (1,129.32 km) |
| Seal Beach to Soddy-Daisy (Tennessee) | 1,867.43 mi (3,005.34 km) |
| Seal Beach to Solana Beach (California) | 70.45 mi (113.37 km) |
| Seal Beach to Soledad (California) | 262.10 mi (421.81 km) |
| Seal Beach to Solon (Ohio) | 2,057.62 mi (3,311.43 km) |
| Seal Beach to Somers Point (New Jersey) | 2,419.92 mi (3,894.48 km) |
| Seal Beach to Somerset (Kentucky) | 1,888.26 mi (3,038.85 km) |
| Seal Beach to Somerset (New Jersey) | 2,419.85 mi (3,894.38 km) |
