| Huntsville to Oliveira de Frades | 4,163.77 mi (6,700.94 km) |
| Huntsville to Oliveira do Bairro | 4,153.51 mi (6,684.43 km) |
| Huntsville to Oliveira do Hospital | 4,188.67 mi (6,741.02 km) |
| Huntsville to Ourem | 4,172.76 mi (6,715.41 km) |
| Huntsville to Ovar | 4,138.06 mi (6,659.57 km) |
| Huntsville to Pacos de Ferreira | 4,139.21 mi (6,661.41 km) |
| Huntsville to Palmela | 4,184.90 mi (6,734.94 km) |
| Huntsville to Paredes | 4,144.12 mi (6,669.32 km) |
| Huntsville to Paredes de Coura | 4,115.18 mi (6,622.75 km) |
| Huntsville to Penacova | 4,170.45 mi (6,711.69 km) |
| Huntsville to Penafiel | 4,146.35 mi (6,672.91 km) |
| Huntsville to Peniche | 4,141.09 mi (6,664.45 km) |
| Huntsville to Peso da Regua | 4,171.91 mi (6,714.04 km) |
| Huntsville to Pinhal Novo | 4,182.49 mi (6,731.06 km) |
| Huntsville to Pinhel | 4,216.15 mi (6,785.24 km) |
