| Iowa City to Oliveira de Frades | 4,149.36 mi (6,677.75 km) |
| Iowa City to Oliveira do Bairro | 4,142.26 mi (6,666.33 km) |
| Iowa City to Oliveira do Hospital | 4,176.58 mi (6,721.56 km) |
| Iowa City to Ourem | 4,170.31 mi (6,711.46 km) |
| Iowa City to Ovar | 4,123.84 mi (6,636.68 km) |
| Iowa City to Pacos de Ferreira | 4,120.15 mi (6,630.74 km) |
| Iowa City to Palmela | 4,194.35 mi (6,750.16 km) |
| Iowa City to Paredes | 4,125.48 mi (6,639.33 km) |
| Iowa City to Paredes de Coura | 4,090.27 mi (6,582.65 km) |
| Iowa City to Penacova | 4,160.82 mi (6,696.19 km) |
| Iowa City to Penafiel | 4,127.47 mi (6,642.53 km) |
| Iowa City to Peniche | 4,144.67 mi (6,670.20 km) |
| Iowa City to Peso da Regua | 4,151.56 mi (6,681.30 km) |
| Iowa City to Pinhal Novo | 4,191.37 mi (6,745.35 km) |
| Iowa City to Pinhel | 4,196.91 mi (6,754.27 km) |
