| Norridge to Montalegre | 3,951.68 mi (6,359.61 km) |
| Norridge to Montemor-o-Novo | 4,042.49 mi (6,505.76 km) |
| Norridge to Montemor-o-Velho | 3,967.92 mi (6,385.74 km) |
| Norridge to Montijo | 4,009.65 mi (6,452.91 km) |
| Norridge to Mortagua | 3,979.26 mi (6,404.00 km) |
| Norridge to Moura | 4,096.50 mi (6,592.68 km) |
| Norridge to Murtosa | 3,950.75 mi (6,358.11 km) |
| Norridge to Nazare | 3,969.91 mi (6,388.95 km) |
| Norridge to Nelas | 3,993.82 mi (6,427.43 km) |
| Norridge to Obidos | 3,974.10 mi (6,395.70 km) |
| Norridge to Odemira | 4,061.22 mi (6,535.91 km) |
| Norridge to Odivelas | 3,992.91 mi (6,425.97 km) |
| Norridge to Oeiras | 3,990.30 mi (6,421.77 km) |
| Norridge to Olhao | 4,118.49 mi (6,628.07 km) |
| Norridge to Oliveira de Azemeis | 3,954.30 mi (6,363.82 km) |
