| Upper Grand Lagoon to Montalegre | 4,283.08 mi (6,892.94 km) |
| Upper Grand Lagoon to Montemor-o-Novo | 4,327.31 mi (6,964.13 km) |
| Upper Grand Lagoon to Montemor-o-Velho | 4,271.88 mi (6,874.93 km) |
| Upper Grand Lagoon to Montijo | 4,291.52 mi (6,906.54 km) |
| Upper Grand Lagoon to Mortagua | 4,289.11 mi (6,902.65 km) |
| Upper Grand Lagoon to Moura | 4,377.98 mi (7,045.67 km) |
| Upper Grand Lagoon to Murtosa | 4,262.97 mi (6,860.59 km) |
| Upper Grand Lagoon to Nazare | 4,264.00 mi (6,862.24 km) |
| Upper Grand Lagoon to Nelas | 4,306.63 mi (6,930.86 km) |
| Upper Grand Lagoon to Obidos | 4,264.30 mi (6,862.73 km) |
| Upper Grand Lagoon to Odemira | 4,328.89 mi (6,966.67 km) |
| Upper Grand Lagoon to Odivelas | 4,274.92 mi (6,879.82 km) |
| Upper Grand Lagoon to Oeiras | 4,270.11 mi (6,872.07 km) |
| Upper Grand Lagoon to Olhao | 4,382.49 mi (7,052.94 km) |
| Upper Grand Lagoon to Oliveira de Azemeis | 4,268.76 mi (6,869.91 km) |
