| Port Neches to Oliveira de Frades | 4,699.05 mi (7,562.40 km) |
| Port Neches to Oliveira do Bairro | 4,688.59 mi (7,545.55 km) |
| Port Neches to Oliveira do Hospital | 4,723.78 mi (7,602.18 km) |
| Port Neches to Ourem | 4,707.11 mi (7,575.37 km) |
| Port Neches to Ovar | 4,673.36 mi (7,521.05 km) |
| Port Neches to Pacos de Ferreira | 4,674.81 mi (7,523.37 km) |
| Port Neches to Palmela | 4,718.08 mi (7,593.01 km) |
| Port Neches to Paredes | 4,679.69 mi (7,531.24 km) |
| Port Neches to Paredes de Coura | 4,651.11 mi (7,485.24 km) |
| Port Neches to Penacova | 4,705.39 mi (7,572.59 km) |
| Port Neches to Penafiel | 4,681.94 mi (7,534.85 km) |
| Port Neches to Peniche | 4,674.94 mi (7,523.58 km) |
| Port Neches to Peso da Regua | 4,707.56 mi (7,576.09 km) |
| Port Neches to Pinhal Novo | 4,715.73 mi (7,589.24 km) |
| Port Neches to Pinhel | 4,751.70 mi (7,647.13 km) |
