| Quarteira to Sestu | 944.97 mi (1,520.79 km) |
| Quarteira to Settimo Torinese | 993.76 mi (1,599.31 km) |
| Quarteira to Seveso | 1,069.04 mi (1,720.45 km) |
| Quarteira to Sezze | 1,169.47 mi (1,882.07 km) |
| Quarteira to Siano | 1,248.31 mi (2,008.96 km) |
| Quarteira to Siena | 1,109.51 mi (1,785.59 km) |
| Quarteira to Signa | 1,107.97 mi (1,783.11 km) |
| Quarteira to Silea | 1,207.84 mi (1,943.83 km) |
| Quarteira to Silvi Paese | 1,234.41 mi (1,986.59 km) |
| Quarteira to Sinalunga | 1,127.04 mi (1,813.80 km) |
| Quarteira to Siniscola | 986.38 mi (1,587.43 km) |
| Quarteira to Sinnai | 950.92 mi (1,530.36 km) |
| Quarteira to Siracusa | 1,286.24 mi (2,070.00 km) |
| Quarteira to Solaro | 1,065.84 mi (1,715.30 km) |
| Quarteira to Soliera | 1,122.23 mi (1,806.06 km) |
