| Louth to Montalegre | 874.99 mi (1,408.15 km) |
| Louth to Montemor-o-Novo | 1,088.79 mi (1,752.23 km) |
| Louth to Montemor-o-Velho | 998.50 mi (1,606.94 km) |
| Louth to Montijo | 1,098.60 mi (1,768.03 km) |
| Louth to Mortagua | 972.85 mi (1,565.65 km) |
| Louth to Moura | 1,110.57 mi (1,787.30 km) |
| Louth to Murtosa | 961.12 mi (1,546.77 km) |
| Louth to Nazare | 1,042.36 mi (1,677.51 km) |
| Louth to Nelas | 960.49 mi (1,545.76 km) |
| Louth to Obidos | 1,059.70 mi (1,705.42 km) |
| Louth to Odemira | 1,165.88 mi (1,876.30 km) |
| Louth to Odivelas | 1,096.82 mi (1,765.16 km) |
| Louth to Oeiras | 1,106.32 mi (1,780.45 km) |
| Louth to Olhao | 1,190.02 mi (1,915.15 km) |
| Louth to Oliveira de Azemeis | 951.20 mi (1,530.81 km) |
