| Seini to Montalegre | 1,566.33 mi (2,520.76 km) |
| Seini to Montemor-o-Novo | 1,692.15 mi (2,723.25 km) |
| Seini to Montemor-o-Velho | 1,660.32 mi (2,672.03 km) |
| Seini to Montijo | 1,722.22 mi (2,771.64 km) |
| Seini to Mortagua | 1,630.66 mi (2,624.30 km) |
| Seini to Moura | 1,676.45 mi (2,697.99 km) |
| Seini to Murtosa | 1,639.34 mi (2,638.26 km) |
| Seini to Nazare | 1,697.32 mi (2,731.57 km) |
| Seini to Nelas | 1,610.21 mi (2,591.39 km) |
| Seini to Obidos | 1,709.94 mi (2,751.88 km) |
| Seini to Odemira | 1,751.25 mi (2,818.36 km) |
| Seini to Odivelas | 1,731.16 mi (2,786.04 km) |
| Seini to Oeiras | 1,741.33 mi (2,802.40 km) |
| Seini to Olhao | 1,737.15 mi (2,795.68 km) |
| Seini to Oliveira de Azemeis | 1,628.57 mi (2,620.93 km) |
