| Seal Beach to Sestu | 6,363.90 mi (10,241.71 km) |
| Seal Beach to Settimo Torinese | 6,018.85 mi (9,686.40 km) |
| Seal Beach to Seveso | 6,037.14 mi (9,715.83 km) |
| Seal Beach to Sezze | 6,382.69 mi (10,271.95 km) |
| Seal Beach to Siano | 6,472.97 mi (10,417.23 km) |
| Seal Beach to Siena | 6,229.43 mi (10,025.29 km) |
| Seal Beach to Signa | 6,197.38 mi (9,973.71 km) |
| Seal Beach to Silea | 6,135.48 mi (9,874.10 km) |
| Seal Beach to Silvi Paese | 6,359.36 mi (10,234.40 km) |
| Seal Beach to Sinalunga | 6,247.77 mi (10,054.81 km) |
| Seal Beach to Siniscola | 6,318.89 mi (10,169.27 km) |
| Seal Beach to Sinnai | 6,367.68 mi (10,247.79 km) |
| Seal Beach to Siracusa | 6,696.78 mi (10,777.43 km) |
| Seal Beach to Solaro | 6,036.89 mi (9,715.44 km) |
| Seal Beach to Soliera | 6,141.38 mi (9,883.60 km) |
