| Sioux City to Oliveira de Frades | 4,334.36 mi (6,975.48 km) |
| Sioux City to Oliveira do Bairro | 4,328.30 mi (6,965.73 km) |
| Sioux City to Oliveira do Hospital | 4,362.17 mi (7,020.24 km) |
| Sioux City to Ourem | 4,358.97 mi (7,015.08 km) |
| Sioux City to Ovar | 4,309.04 mi (6,934.72 km) |
| Sioux City to Pacos de Ferreira | 4,303.81 mi (6,926.32 km) |
| Sioux City to Palmela | 4,386.56 mi (7,059.49 km) |
| Sioux City to Paredes | 4,309.25 mi (6,935.08 km) |
| Sioux City to Paredes de Coura | 4,272.20 mi (6,875.44 km) |
| Sioux City to Penacova | 4,347.27 mi (6,996.26 km) |
| Sioux City to Penafiel | 4,311.16 mi (6,938.14 km) |
| Sioux City to Peniche | 4,335.33 mi (6,977.04 km) |
| Sioux City to Peso da Regua | 4,334.64 mi (6,975.93 km) |
| Sioux City to Pinhal Novo | 4,383.42 mi (7,054.43 km) |
| Sioux City to Pinhel | 4,380.10 mi (7,049.08 km) |
