| Severn to Montalegre | 3,525.77 mi (5,674.17 km) |
| Severn to Montemor-o-Novo | 3,589.05 mi (5,776.02 km) |
| Severn to Montemor-o-Velho | 3,525.25 mi (5,673.33 km) |
| Severn to Montijo | 3,554.32 mi (5,720.12 km) |
| Severn to Mortagua | 3,540.20 mi (5,697.40 km) |
| Severn to Moura | 3,641.48 mi (5,860.39 km) |
| Severn to Murtosa | 3,512.95 mi (5,653.55 km) |
| Severn to Nazare | 3,521.40 mi (5,667.14 km) |
| Severn to Nelas | 3,556.64 mi (5,723.86 km) |
| Severn to Obidos | 3,523.35 mi (5,670.28 km) |
| Severn to Odemira | 3,598.20 mi (5,790.75 km) |
| Severn to Odivelas | 3,537.55 mi (5,693.13 km) |
| Severn to Oeiras | 3,533.66 mi (5,686.88 km) |
| Severn to Olhao | 3,653.81 mi (5,880.24 km) |
| Severn to Oliveira de Azemeis | 3,517.89 mi (5,661.50 km) |
