| Overlea to Montalegre | 3,510.19 mi (5,649.11 km) |
| Overlea to Montemor-o-Novo | 3,574.19 mi (5,752.10 km) |
| Overlea to Montemor-o-Velho | 3,510.08 mi (5,648.93 km) |
| Overlea to Montijo | 3,539.50 mi (5,696.27 km) |
| Overlea to Mortagua | 3,524.95 mi (5,672.85 km) |
| Overlea to Moura | 3,626.67 mi (5,836.56 km) |
| Overlea to Murtosa | 3,497.66 mi (5,628.95 km) |
| Overlea to Nazare | 3,506.39 mi (5,642.99 km) |
| Overlea to Nelas | 3,541.35 mi (5,699.25 km) |
| Overlea to Obidos | 3,508.40 mi (5,646.22 km) |
| Overlea to Odemira | 3,583.62 mi (5,767.27 km) |
| Overlea to Odivelas | 3,522.73 mi (5,669.28 km) |
| Overlea to Oeiras | 3,518.88 mi (5,663.09 km) |
| Overlea to Olhao | 3,639.28 mi (5,856.85 km) |
| Overlea to Oliveira de Azemeis | 3,502.57 mi (5,636.84 km) |
