| Boppard to Montemor-o-Novo | 1,112.85 mi (1,790.97 km) |
| Boppard to Montemor-o-Velho | 1,050.10 mi (1,689.97 km) |
| Boppard to Montijo | 1,134.50 mi (1,825.80 km) |
| Boppard to Mortagua | 1,020.44 mi (1,642.24 km) |
| Boppard to Moura | 1,115.63 mi (1,795.44 km) |
| Boppard to Murtosa | 1,020.04 mi (1,641.59 km) |
| Boppard to Nazare | 1,092.65 mi (1,758.46 km) |
| Boppard to Nelas | 1,002.48 mi (1,613.34 km) |
| Boppard to Obidos | 1,108.32 mi (1,783.66 km) |
| Boppard to Odemira | 1,184.83 mi (1,906.79 km) |
| Boppard to Odivelas | 1,138.60 mi (1,832.40 km) |
| Boppard to Oeiras | 1,149.02 mi (1,849.17 km) |
| Boppard to Olhao | 1,190.18 mi (1,915.41 km) |
| Boppard to Oliveira de Azemeis | 1,008.97 mi (1,623.78 km) |
| Boppard to Oliveira de Frades | 1,004.43 mi (1,616.48 km) |
