| Central Islip to Montalegre | 3,309.49 mi (5,326.10 km) |
| Central Islip to Montemor-o-Novo | 3,374.93 mi (5,431.43 km) |
| Central Islip to Montemor-o-Velho | 3,310.12 mi (5,327.12 km) |
| Central Islip to Montijo | 3,340.36 mi (5,375.80 km) |
| Central Islip to Mortagua | 3,324.79 mi (5,350.74 km) |
| Central Islip to Moura | 3,427.56 mi (5,516.12 km) |
| Central Islip to Murtosa | 3,297.44 mi (5,306.71 km) |
| Central Islip to Nazare | 3,306.77 mi (5,321.73 km) |
| Central Islip to Nelas | 3,341.11 mi (5,376.99 km) |
| Central Islip to Obidos | 3,308.93 mi (5,325.20 km) |
| Central Islip to Odemira | 3,385.12 mi (5,447.83 km) |
| Central Islip to Odivelas | 3,323.59 mi (5,348.80 km) |
| Central Islip to Oeiras | 3,319.83 mi (5,342.75 km) |
| Central Islip to Olhao | 3,440.97 mi (5,537.70 km) |
| Central Islip to Oliveira de Azemeis | 3,302.28 mi (5,314.50 km) |
