| Upper Arlington to Oliveira de Frades | 3,813.25 mi (6,136.83 km) |
| Upper Arlington to Oliveira do Bairro | 3,804.30 mi (6,122.43 km) |
| Upper Arlington to Oliveira do Hospital | 3,839.22 mi (6,178.62 km) |
| Upper Arlington to Ourem | 3,827.42 mi (6,159.64 km) |
| Upper Arlington to Ovar | 3,787.54 mi (6,095.46 km) |
| Upper Arlington to Pacos de Ferreira | 3,786.65 mi (6,094.02 km) |
| Upper Arlington to Palmela | 3,844.91 mi (6,187.79 km) |
| Upper Arlington to Paredes | 3,791.76 mi (6,102.24 km) |
| Upper Arlington to Paredes de Coura | 3,760.12 mi (6,051.33 km) |
| Upper Arlington to Penacova | 3,821.99 mi (6,150.89 km) |
| Upper Arlington to Penafiel | 3,793.89 mi (6,105.68 km) |
| Upper Arlington to Peniche | 3,798.33 mi (6,112.81 km) |
| Upper Arlington to Peso da Regua | 3,818.92 mi (6,145.95 km) |
| Upper Arlington to Pinhal Novo | 3,842.24 mi (6,183.48 km) |
| Upper Arlington to Pinhel | 3,863.75 mi (6,218.11 km) |
