| Key Biscayne to Montalegre | 4,180.11 mi (6,727.24 km) |
| Key Biscayne to Montemor-o-Novo | 4,196.45 mi (6,753.53 km) |
| Key Biscayne to Montemor-o-Velho | 4,153.21 mi (6,683.95 km) |
| Key Biscayne to Montijo | 4,159.80 mi (6,694.55 km) |
| Key Biscayne to Mortagua | 4,173.45 mi (6,716.51 km) |
| Key Biscayne to Moura | 4,244.11 mi (6,830.23 km) |
| Key Biscayne to Murtosa | 4,149.28 mi (6,677.62 km) |
| Key Biscayne to Nazare | 4,139.84 mi (6,662.43 km) |
| Key Biscayne to Nelas | 4,192.30 mi (6,746.85 km) |
| Key Biscayne to Obidos | 4,137.92 mi (6,659.35 km) |
| Key Biscayne to Odemira | 4,188.32 mi (6,740.45 km) |
| Key Biscayne to Odivelas | 4,143.64 mi (6,668.54 km) |
| Key Biscayne to Oeiras | 4,137.69 mi (6,658.96 km) |
| Key Biscayne to Olhao | 4,238.70 mi (6,821.53 km) |
| Key Biscayne to Oliveira de Azemeis | 4,156.24 mi (6,688.82 km) |
