| Holyhead to Oliveira de Frades | 885.69 mi (1,425.38 km) |
| Holyhead to Oliveira do Bairro | 902.17 mi (1,451.90 km) |
| Holyhead to Oliveira do Hospital | 907.45 mi (1,460.40 km) |
| Holyhead to Ourem | 961.75 mi (1,547.78 km) |
| Holyhead to Ovar | 879.68 mi (1,415.70 km) |
| Holyhead to Pacos de Ferreira | 850.26 mi (1,368.36 km) |
| Holyhead to Palmela | 1,038.55 mi (1,671.38 km) |
| Holyhead to Paredes | 854.16 mi (1,374.63 km) |
| Holyhead to Paredes de Coura | 808.08 mi (1,300.48 km) |
| Holyhead to Penacova | 916.95 mi (1,475.70 km) |
| Holyhead to Penafiel | 853.29 mi (1,373.24 km) |
| Holyhead to Peniche | 990.01 mi (1,593.26 km) |
| Holyhead to Peso da Regua | 851.69 mi (1,370.66 km) |
| Holyhead to Pinhal Novo | 1,034.30 mi (1,664.55 km) |
| Holyhead to Pinhel | 872.86 mi (1,404.73 km) |
