| Rockville Centre to Oliveira de Frades | 3,344.26 mi (5,382.06 km) |
| Rockville Centre to Oliveira do Bairro | 3,334.27 mi (5,365.99 km) |
| Rockville Centre to Oliveira do Hospital | 3,369.39 mi (5,422.51 km) |
| Rockville Centre to Ourem | 3,354.48 mi (5,398.52 km) |
| Rockville Centre to Ovar | 3,318.55 mi (5,340.68 km) |
| Rockville Centre to Pacos de Ferreira | 3,319.32 mi (5,341.94 km) |
| Rockville Centre to Palmela | 3,368.31 mi (5,420.77 km) |
| Rockville Centre to Paredes | 3,324.27 mi (5,349.90 km) |
| Rockville Centre to Paredes de Coura | 3,294.94 mi (5,302.70 km) |
| Rockville Centre to Penacova | 3,351.38 mi (5,393.53 km) |
| Rockville Centre to Penafiel | 3,326.49 mi (5,353.47 km) |
| Rockville Centre to Peniche | 3,323.56 mi (5,348.75 km) |
| Rockville Centre to Peso da Regua | 3,351.97 mi (5,394.47 km) |
| Rockville Centre to Pinhal Novo | 3,365.81 mi (5,416.74 km) |
| Rockville Centre to Pinhel | 3,396.32 mi (5,465.85 km) |
