| Rockford to Oliveira de Frades | 4,018.30 mi (6,466.82 km) |
| Rockford to Oliveira do Bairro | 4,011.05 mi (6,455.16 km) |
| Rockford to Oliveira do Hospital | 4,045.43 mi (6,510.49 km) |
| Rockford to Ourem | 4,038.74 mi (6,499.72 km) |
| Rockford to Ovar | 3,992.76 mi (6,425.72 km) |
| Rockford to Pacos de Ferreira | 3,989.29 mi (6,420.14 km) |
| Rockford to Palmela | 4,062.34 mi (6,537.70 km) |
| Rockford to Paredes | 3,994.61 mi (6,428.70 km) |
| Rockford to Paredes de Coura | 3,959.67 mi (6,372.48 km) |
| Rockford to Penacova | 4,029.54 mi (6,484.92 km) |
| Rockford to Penafiel | 3,996.61 mi (6,431.92 km) |
| Rockford to Peniche | 4,012.85 mi (6,458.05 km) |
| Rockford to Peso da Regua | 4,020.78 mi (6,470.82 km) |
| Rockford to Pinhal Novo | 4,059.37 mi (6,532.93 km) |
| Rockford to Pinhel | 4,066.10 mi (6,543.75 km) |
