| Mount Prospect to Montalegre | 3,953.43 mi (6,362.42 km) |
| Mount Prospect to Montemor-o-Novo | 4,044.77 mi (6,509.42 km) |
| Mount Prospect to Montemor-o-Velho | 3,969.99 mi (6,389.08 km) |
| Mount Prospect to Montijo | 4,011.97 mi (6,456.64 km) |
| Mount Prospect to Mortagua | 3,981.26 mi (6,407.22 km) |
| Mount Prospect to Moura | 4,098.80 mi (6,596.38 km) |
| Mount Prospect to Murtosa | 3,952.73 mi (6,361.30 km) |
| Mount Prospect to Nazare | 3,972.10 mi (6,392.47 km) |
| Mount Prospect to Nelas | 3,995.78 mi (6,430.59 km) |
| Mount Prospect to Obidos | 3,976.34 mi (6,399.29 km) |
| Mount Prospect to Odemira | 4,063.70 mi (6,539.89 km) |
| Mount Prospect to Odivelas | 3,995.24 mi (6,429.71 km) |
| Mount Prospect to Oeiras | 3,992.65 mi (6,425.56 km) |
| Mount Prospect to Olhao | 4,120.99 mi (6,632.09 km) |
| Mount Prospect to Oliveira de Azemeis | 3,956.25 mi (6,366.97 km) |
