| Forest Park to Montalegre | 3,891.17 mi (6,262.23 km) |
| Forest Park to Montemor-o-Novo | 3,967.06 mi (6,384.36 km) |
| Forest Park to Montemor-o-Velho | 3,898.33 mi (6,273.75 km) |
| Forest Park to Montijo | 3,933.08 mi (6,329.69 km) |
| Forest Park to Mortagua | 3,911.68 mi (6,295.24 km) |
| Forest Park to Moura | 4,020.28 mi (6,470.02 km) |
| Forest Park to Murtosa | 3,883.80 mi (6,250.37 km) |
| Forest Park to Nazare | 3,897.09 mi (6,271.75 km) |
| Forest Park to Nelas | 3,927.30 mi (6,320.39 km) |
| Forest Park to Obidos | 3,900.04 mi (6,276.50 km) |
| Forest Park to Odemira | 3,980.39 mi (6,405.81 km) |
| Forest Park to Odivelas | 3,916.29 mi (6,302.67 km) |
| Forest Park to Oeiras | 3,912.96 mi (6,297.30 km) |
| Forest Park to Olhao | 4,036.80 mi (6,496.61 km) |
| Forest Park to Oliveira de Azemeis | 3,888.11 mi (6,257.31 km) |
