| Barrhead to Oliveira de Frades | 1,056.34 mi (1,700.01 km) |
| Barrhead to Oliveira do Bairro | 1,072.43 mi (1,725.91 km) |
| Barrhead to Oliveira do Hospital | 1,078.58 mi (1,735.81 km) |
| Barrhead to Ourem | 1,132.18 mi (1,822.06 km) |
| Barrhead to Ovar | 1,049.62 mi (1,689.20 km) |
| Barrhead to Pacos de Ferreira | 1,020.42 mi (1,642.20 km) |
| Barrhead to Palmela | 1,208.83 mi (1,945.43 km) |
| Barrhead to Paredes | 1,024.44 mi (1,648.68 km) |
| Barrhead to Paredes de Coura | 977.71 mi (1,573.47 km) |
| Barrhead to Penacova | 1,087.59 mi (1,750.31 km) |
| Barrhead to Penafiel | 1,023.65 mi (1,647.40 km) |
| Barrhead to Peniche | 1,159.35 mi (1,865.79 km) |
| Barrhead to Peso da Regua | 1,022.75 mi (1,645.95 km) |
| Barrhead to Pinhal Novo | 1,204.55 mi (1,938.54 km) |
| Barrhead to Pinhel | 1,044.70 mi (1,681.28 km) |
