| Nierstein to Montemor-o-Novo | 1,123.11 mi (1,807.48 km) |
| Nierstein to Montemor-o-Velho | 1,063.64 mi (1,711.77 km) |
| Nierstein to Montijo | 1,145.82 mi (1,844.02 km) |
| Nierstein to Mortagua | 1,033.83 mi (1,663.78 km) |
| Nierstein to Moura | 1,123.89 mi (1,808.72 km) |
| Nierstein to Murtosa | 1,034.56 mi (1,664.96 km) |
| Nierstein to Nazare | 1,105.74 mi (1,779.52 km) |
| Nierstein to Nelas | 1,015.46 mi (1,634.23 km) |
| Nierstein to Obidos | 1,121.12 mi (1,804.27 km) |
| Nierstein to Odemira | 1,194.06 mi (1,921.65 km) |
| Nierstein to Odivelas | 1,150.50 mi (1,851.55 km) |
| Nierstein to Oeiras | 1,160.94 mi (1,868.35 km) |
| Nierstein to Olhao | 1,197.41 mi (1,927.04 km) |
| Nierstein to Oliveira de Azemeis | 1,023.48 mi (1,647.13 km) |
| Nierstein to Oliveira de Frades | 1,018.28 mi (1,638.77 km) |
