| Swallownest to Montalegre | 851.46 mi (1,370.29 km) |
| Swallownest to Montemor-o-Novo | 1,067.75 mi (1,718.37 km) |
| Swallownest to Montemor-o-Velho | 974.72 mi (1,568.66 km) |
| Swallownest to Montijo | 1,075.90 mi (1,731.49 km) |
| Swallownest to Mortagua | 949.89 mi (1,528.71 km) |
| Swallownest to Moura | 1,091.87 mi (1,757.20 km) |
| Swallownest to Murtosa | 936.77 mi (1,507.59 km) |
| Swallownest to Nazare | 1,018.28 mi (1,638.77 km) |
| Swallownest to Nelas | 938.44 mi (1,510.27 km) |
| Swallownest to Obidos | 1,035.68 mi (1,666.76 km) |
| Swallownest to Odemira | 1,144.82 mi (1,842.41 km) |
| Swallownest to Odivelas | 1,073.34 mi (1,727.38 km) |
| Swallownest to Oeiras | 1,082.64 mi (1,742.34 km) |
| Swallownest to Olhao | 1,171.26 mi (1,884.97 km) |
| Swallownest to Oliveira de Azemeis | 927.13 mi (1,492.07 km) |
