| Gateway to Montalegre | 4,224.73 mi (6,799.04 km) |
| Gateway to Montemor-o-Novo | 4,247.73 mi (6,836.07 km) |
| Gateway to Montemor-o-Velho | 4,201.54 mi (6,761.72 km) |
| Gateway to Montijo | 4,211.23 mi (6,777.33 km) |
| Gateway to Mortagua | 4,221.09 mi (6,793.18 km) |
| Gateway to Moura | 4,296.18 mi (6,914.03 km) |
| Gateway to Murtosa | 4,196.41 mi (6,753.48 km) |
| Gateway to Nazare | 4,189.45 mi (6,742.27 km) |
| Gateway to Nelas | 4,239.65 mi (6,823.06 km) |
| Gateway to Obidos | 4,188.06 mi (6,740.03 km) |
| Gateway to Odemira | 4,241.89 mi (6,826.66 km) |
| Gateway to Odivelas | 4,194.95 mi (6,751.12 km) |
| Gateway to Oeiras | 4,189.26 mi (6,741.96 km) |
| Gateway to Olhao | 4,293.10 mi (6,909.08 km) |
| Gateway to Oliveira de Azemeis | 4,203.10 mi (6,764.24 km) |
