| Poplar Bluff to Montalegre | 4,255.49 mi (6,848.54 km) |
| Poplar Bluff to Montemor-o-Novo | 4,331.70 mi (6,971.19 km) |
| Poplar Bluff to Montemor-o-Velho | 4,263.00 mi (6,860.64 km) |
| Poplar Bluff to Montijo | 4,297.70 mi (6,916.47 km) |
| Poplar Bluff to Mortagua | 4,276.32 mi (6,882.07 km) |
| Poplar Bluff to Moura | 4,384.90 mi (7,056.82 km) |
| Poplar Bluff to Murtosa | 4,248.42 mi (6,837.17 km) |
| Poplar Bluff to Nazare | 4,261.77 mi (6,858.66 km) |
| Poplar Bluff to Nelas | 4,291.91 mi (6,907.17 km) |
| Poplar Bluff to Obidos | 4,264.71 mi (6,863.38 km) |
| Poplar Bluff to Odemira | 4,344.81 mi (6,992.30 km) |
| Poplar Bluff to Odivelas | 4,280.91 mi (6,889.45 km) |
| Poplar Bluff to Oeiras | 4,277.55 mi (6,884.05 km) |
| Poplar Bluff to Olhao | 4,401.17 mi (7,083.00 km) |
| Poplar Bluff to Oliveira de Azemeis | 4,252.71 mi (6,844.07 km) |
