| Ironton to Oliveira de Frades | 3,842.07 mi (6,183.21 km) |
| Ironton to Oliveira do Bairro | 3,832.51 mi (6,167.83 km) |
| Ironton to Oliveira do Hospital | 3,867.56 mi (6,224.24 km) |
| Ironton to Ourem | 3,853.89 mi (6,202.24 km) |
| Ironton to Ovar | 3,816.35 mi (6,141.81 km) |
| Ironton to Pacos de Ferreira | 3,816.40 mi (6,141.90 km) |
| Ironton to Palmela | 3,869.03 mi (6,226.61 km) |
| Ironton to Paredes | 3,821.42 mi (6,149.98 km) |
| Ironton to Paredes de Coura | 3,791.03 mi (6,101.07 km) |
| Ironton to Penacova | 3,849.87 mi (6,195.76 km) |
| Ironton to Penafiel | 3,823.60 mi (6,153.49 km) |
| Ironton to Peniche | 3,823.64 mi (6,153.55 km) |
| Ironton to Peso da Regua | 3,848.89 mi (6,194.18 km) |
| Ironton to Pinhal Novo | 3,866.47 mi (6,222.48 km) |
| Ironton to Pinhel | 3,893.47 mi (6,265.94 km) |
