| Glenn Dale to Oliveira de Frades | 3,544.97 mi (5,705.08 km) |
| Glenn Dale to Oliveira do Bairro | 3,534.74 mi (5,688.61 km) |
| Glenn Dale to Oliveira do Hospital | 3,569.90 mi (5,745.20 km) |
| Glenn Dale to Ourem | 3,554.19 mi (5,719.92 km) |
| Glenn Dale to Ovar | 3,519.27 mi (5,663.71 km) |
| Glenn Dale to Pacos de Ferreira | 3,520.41 mi (5,665.55 km) |
| Glenn Dale to Palmela | 3,566.89 mi (5,740.36 km) |
| Glenn Dale to Paredes | 3,525.32 mi (5,673.46 km) |
| Glenn Dale to Paredes de Coura | 3,496.47 mi (5,627.02 km) |
| Glenn Dale to Penacova | 3,551.70 mi (5,715.92 km) |
| Glenn Dale to Penafiel | 3,527.56 mi (5,677.05 km) |
| Glenn Dale to Peniche | 3,522.75 mi (5,669.31 km) |
| Glenn Dale to Peso da Regua | 3,553.12 mi (5,718.20 km) |
| Glenn Dale to Pinhal Novo | 3,564.45 mi (5,736.42 km) |
| Glenn Dale to Pinhel | 3,597.35 mi (5,789.38 km) |
