| Diemen to Montemor-o-Novo | 1,136.95 mi (1,829.75 km) |
| Diemen to Montemor-o-Velho | 1,060.24 mi (1,706.29 km) |
| Diemen to Montijo | 1,153.43 mi (1,856.27 km) |
| Diemen to Mortagua | 1,031.89 mi (1,660.67 km) |
| Diemen to Moura | 1,148.61 mi (1,848.51 km) |
| Diemen to Murtosa | 1,026.16 mi (1,651.44 km) |
| Diemen to Nazare | 1,104.16 mi (1,776.98 km) |
| Diemen to Nelas | 1,016.20 mi (1,635.42 km) |
| Diemen to Obidos | 1,120.88 mi (1,803.88 km) |
| Diemen to Odemira | 1,212.41 mi (1,951.18 km) |
| Diemen to Odivelas | 1,154.85 mi (1,858.55 km) |
| Diemen to Oeiras | 1,165.00 mi (1,874.89 km) |
| Diemen to Olhao | 1,226.54 mi (1,973.92 km) |
| Diemen to Oliveira de Azemeis | 1,015.41 mi (1,634.15 km) |
| Diemen to Oliveira de Frades | 1,014.04 mi (1,631.95 km) |
