| Nieuwkoop to Oliveira do Bairro | 1,021.37 mi (1,643.74 km) |
| Nieuwkoop to Oliveira do Hospital | 1,012.41 mi (1,629.32 km) |
| Nieuwkoop to Ourem | 1,073.69 mi (1,727.94 km) |
| Nieuwkoop to Ovar | 1,005.21 mi (1,617.74 km) |
| Nieuwkoop to Pacos de Ferreira | 975.57 mi (1,570.03 km) |
| Nieuwkoop to Palmela | 1,146.99 mi (1,845.91 km) |
| Nieuwkoop to Paredes | 977.38 mi (1,572.94 km) |
| Nieuwkoop to Paredes de Coura | 944.29 mi (1,519.69 km) |
| Nieuwkoop to Penacova | 1,029.42 mi (1,656.68 km) |
| Nieuwkoop to Penafiel | 975.58 mi (1,570.05 km) |
| Nieuwkoop to Peniche | 1,113.98 mi (1,792.78 km) |
| Nieuwkoop to Peso da Regua | 963.13 mi (1,550.00 km) |
| Nieuwkoop to Pinhal Novo | 1,143.55 mi (1,840.37 km) |
| Nieuwkoop to Pinhel | 965.52 mi (1,553.86 km) |
| Nieuwkoop to Pombal | 1,059.87 mi (1,705.69 km) |
