| Middle Valley to Montalegre | 4,067.07 mi (6,545.31 km) |
| Middle Valley to Montemor-o-Novo | 4,128.61 mi (6,644.35 km) |
| Middle Valley to Montemor-o-Velho | 4,065.80 mi (6,543.27 km) |
| Middle Valley to Montijo | 4,093.70 mi (6,588.18 km) |
| Middle Valley to Mortagua | 4,080.97 mi (6,567.69 km) |
| Middle Valley to Moura | 4,180.81 mi (6,728.37 km) |
| Middle Valley to Murtosa | 4,053.82 mi (6,523.99 km) |
| Middle Valley to Nazare | 4,061.50 mi (6,536.35 km) |
| Middle Valley to Nelas | 4,097.51 mi (6,594.31 km) |
| Middle Valley to Obidos | 4,063.24 mi (6,539.15 km) |
| Middle Valley to Odemira | 4,136.58 mi (6,657.18 km) |
| Middle Valley to Odivelas | 4,076.95 mi (6,561.22 km) |
| Middle Valley to Oeiras | 4,072.92 mi (6,554.74 km) |
| Middle Valley to Olhao | 4,191.87 mi (6,746.16 km) |
| Middle Valley to Oliveira de Azemeis | 4,058.82 mi (6,532.04 km) |
