| Nieuwegein to Montemor-o-Novo | 1,124.08 mi (1,809.03 km) |
| Nieuwegein to Montemor-o-Velho | 1,048.59 mi (1,687.55 km) |
| Nieuwegein to Montijo | 1,141.06 mi (1,836.36 km) |
| Nieuwegein to Mortagua | 1,020.08 mi (1,641.66 km) |
| Nieuwegein to Moura | 1,134.94 mi (1,826.50 km) |
| Nieuwegein to Murtosa | 1,014.86 mi (1,633.26 km) |
| Nieuwegein to Nazare | 1,092.44 mi (1,758.12 km) |
| Nieuwegein to Nelas | 1,004.15 mi (1,616.02 km) |
| Nieuwegein to Obidos | 1,109.08 mi (1,784.89 km) |
| Nieuwegein to Odemira | 1,199.29 mi (1,930.07 km) |
| Nieuwegein to Odivelas | 1,142.73 mi (1,839.05 km) |
| Nieuwegein to Oeiras | 1,152.92 mi (1,855.45 km) |
| Nieuwegein to Olhao | 1,212.64 mi (1,951.56 km) |
| Nieuwegein to Oliveira de Azemeis | 1,004.07 mi (1,615.89 km) |
| Nieuwegein to Oliveira de Frades | 1,002.39 mi (1,613.19 km) |
