| Tielt to Montemor-o-Novo | 1,021.03 mi (1,643.18 km) |
| Tielt to Montemor-o-Velho | 944.78 mi (1,520.48 km) |
| Tielt to Montijo | 1,037.62 mi (1,669.89 km) |
| Tielt to Mortagua | 916.33 mi (1,474.69 km) |
| Tielt to Moura | 1,032.72 mi (1,662.00 km) |
| Tielt to Murtosa | 910.94 mi (1,466.02 km) |
| Tielt to Nazare | 988.66 mi (1,591.09 km) |
| Tielt to Nelas | 900.52 mi (1,449.24 km) |
| Tielt to Obidos | 1,005.33 mi (1,617.92 km) |
| Tielt to Odemira | 1,096.46 mi (1,764.58 km) |
| Tielt to Odivelas | 1,039.14 mi (1,672.33 km) |
| Tielt to Oeiras | 1,049.31 mi (1,688.70 km) |
| Tielt to Olhao | 1,110.71 mi (1,787.51 km) |
| Tielt to Oliveira de Azemeis | 900.16 mi (1,448.66 km) |
| Tielt to Oliveira de Frades | 898.57 mi (1,446.12 km) |
