| Key Biscayne to Sesimbra | 4,152.20 mi (6,682.32 km) |
| Key Biscayne to Setubal | 4,162.19 mi (6,698.40 km) |
| Key Biscayne to Sever do Vouga | 4,163.05 mi (6,699.77 km) |
| Key Biscayne to Silves | 4,204.18 mi (6,765.98 km) |
| Key Biscayne to Sines | 4,171.02 mi (6,712.60 km) |
| Key Biscayne to Sintra | 4,132.47 mi (6,650.58 km) |
| Key Biscayne to Sobrado de Paiva | 4,164.76 mi (6,702.53 km) |
| Key Biscayne to Sobral de Monte Agraco | 4,142.32 mi (6,666.42 km) |
| Key Biscayne to Soure | 4,157.19 mi (6,690.35 km) |
| Key Biscayne to Tabua | 4,184.89 mi (6,734.94 km) |
| Key Biscayne to Tavira | 4,247.71 mi (6,836.02 km) |
| Key Biscayne to Tomar | 4,173.92 mi (6,717.27 km) |
| Key Biscayne to Tondela | 4,180.23 mi (6,727.42 km) |
| Key Biscayne to Torre de Moncorvo | 4,220.94 mi (6,792.95 km) |
| Key Biscayne to Torres Novas | 4,169.43 mi (6,710.06 km) |
