| Slidell to Oliveira de Frades | 4,482.33 mi (7,213.62 km) |
| Slidell to Oliveira do Bairro | 4,471.23 mi (7,195.74 km) |
| Slidell to Oliveira do Hospital | 4,506.47 mi (7,252.46 km) |
| Slidell to Ourem | 4,487.84 mi (7,222.48 km) |
| Slidell to Ovar | 4,456.69 mi (7,172.36 km) |
| Slidell to Pacos de Ferreira | 4,459.18 mi (7,176.36 km) |
| Slidell to Palmela | 4,496.34 mi (7,236.16 km) |
| Slidell to Paredes | 4,463.96 mi (7,184.05 km) |
| Slidell to Paredes de Coura | 4,436.86 mi (7,140.44 km) |
| Slidell to Penacova | 4,487.63 mi (7,222.14 km) |
| Slidell to Penafiel | 4,466.25 mi (7,187.73 km) |
| Slidell to Peniche | 4,454.54 mi (7,168.89 km) |
| Slidell to Peso da Regua | 4,492.09 mi (7,229.33 km) |
| Slidell to Pinhal Novo | 4,494.12 mi (7,232.58 km) |
| Slidell to Pinhel | 4,535.83 mi (7,299.72 km) |
