| Roanoke to Montalegre | 3,742.25 mi (6,022.58 km) |
| Roanoke to Montemor-o-Novo | 3,802.98 mi (6,120.31 km) |
| Roanoke to Montemor-o-Velho | 3,740.35 mi (6,019.51 km) |
| Roanoke to Montijo | 3,768.07 mi (6,064.13 km) |
| Roanoke to Mortagua | 3,755.62 mi (6,044.09 km) |
| Roanoke to Moura | 3,855.18 mi (6,204.31 km) |
| Roanoke to Murtosa | 3,728.51 mi (6,000.46 km) |
| Roanoke to Nazare | 3,735.93 mi (6,012.40 km) |
| Roanoke to Nelas | 3,772.22 mi (6,070.79 km) |
| Roanoke to Obidos | 3,737.64 mi (6,015.16 km) |
| Roanoke to Odemira | 3,810.99 mi (6,133.19 km) |
| Roanoke to Odivelas | 3,751.32 mi (6,037.16 km) |
| Roanoke to Oeiras | 3,747.29 mi (6,030.68 km) |
| Roanoke to Olhao | 3,866.31 mi (6,222.23 km) |
| Roanoke to Oliveira de Azemeis | 3,733.56 mi (6,008.59 km) |
