| West Chicago to Oliveira de Frades | 3,992.23 mi (6,424.87 km) |
| West Chicago to Oliveira do Bairro | 3,984.73 mi (6,412.80 km) |
| West Chicago to Oliveira do Hospital | 4,019.20 mi (6,468.28 km) |
| West Chicago to Ourem | 4,011.74 mi (6,456.27 km) |
| West Chicago to Ovar | 3,966.65 mi (6,383.71 km) |
| West Chicago to Pacos de Ferreira | 3,963.56 mi (6,378.74 km) |
| West Chicago to Palmela | 4,034.44 mi (6,492.80 km) |
| West Chicago to Paredes | 3,968.85 mi (6,387.25 km) |
| West Chicago to Paredes de Coura | 3,934.40 mi (6,331.80 km) |
| West Chicago to Penacova | 4,003.11 mi (6,442.38 km) |
| West Chicago to Penafiel | 3,970.88 mi (6,390.51 km) |
| West Chicago to Peniche | 3,985.36 mi (6,413.82 km) |
| West Chicago to Peso da Regua | 3,995.19 mi (6,429.64 km) |
| West Chicago to Pinhal Novo | 4,031.52 mi (6,488.10 km) |
| West Chicago to Pinhel | 4,040.46 mi (6,502.49 km) |
