| Oldenzaal to Montemor-o-Novo | 1,190.87 mi (1,916.52 km) |
| Oldenzaal to Montemor-o-Velho | 1,118.43 mi (1,799.95 km) |
| Oldenzaal to Montijo | 1,209.10 mi (1,945.86 km) |
| Oldenzaal to Mortagua | 1,089.58 mi (1,753.51 km) |
| Oldenzaal to Moura | 1,199.51 mi (1,930.43 km) |
| Oldenzaal to Murtosa | 1,085.49 mi (1,746.92 km) |
| Oldenzaal to Nazare | 1,162.07 mi (1,870.17 km) |
| Oldenzaal to Nelas | 1,073.11 mi (1,727.00 km) |
| Oldenzaal to Obidos | 1,178.51 mi (1,896.62 km) |
| Oldenzaal to Odemira | 1,265.36 mi (2,036.39 km) |
| Oldenzaal to Odivelas | 1,211.40 mi (1,949.56 km) |
| Oldenzaal to Oeiras | 1,221.67 mi (1,966.08 km) |
| Oldenzaal to Olhao | 1,276.46 mi (2,054.27 km) |
| Oldenzaal to Oliveira de Azemeis | 1,074.60 mi (1,729.41 km) |
| Oldenzaal to Oliveira de Frades | 1,072.24 mi (1,725.61 km) |
