| Poplar Bluff to Oliveira de Frades | 4,270.16 mi (6,872.15 km) |
| Poplar Bluff to Oliveira do Bairro | 4,261.19 mi (6,857.72 km) |
| Poplar Bluff to Oliveira do Hospital | 4,296.11 mi (6,913.92 km) |
| Poplar Bluff to Ourem | 4,284.17 mi (6,894.71 km) |
| Poplar Bluff to Ovar | 4,244.45 mi (6,830.78 km) |
| Poplar Bluff to Pacos de Ferreira | 4,243.56 mi (6,829.35 km) |
| Poplar Bluff to Palmela | 4,301.28 mi (6,922.24 km) |
| Poplar Bluff to Paredes | 4,248.67 mi (6,837.57 km) |
| Poplar Bluff to Paredes de Coura | 4,216.98 mi (6,786.57 km) |
| Poplar Bluff to Penacova | 4,278.86 mi (6,886.16 km) |
| Poplar Bluff to Penafiel | 4,250.80 mi (6,841.00 km) |
| Poplar Bluff to Peniche | 4,254.91 mi (6,847.62 km) |
| Poplar Bluff to Peso da Regua | 4,275.82 mi (6,881.27 km) |
| Poplar Bluff to Pinhal Novo | 4,298.63 mi (6,917.97 km) |
| Poplar Bluff to Pinhel | 4,320.66 mi (6,953.44 km) |
