| Riemst to Montemor-o-Novo | 1,076.07 mi (1,731.77 km) |
| Riemst to Montemor-o-Velho | 1,006.26 mi (1,619.41 km) |
| Riemst to Montijo | 1,095.23 mi (1,762.59 km) |
| Riemst to Mortagua | 977.11 mi (1,572.50 km) |
| Riemst to Moura | 1,083.36 mi (1,743.51 km) |
| Riemst to Murtosa | 974.17 mi (1,567.77 km) |
| Riemst to Nazare | 1,049.63 mi (1,689.22 km) |
| Riemst to Nelas | 960.17 mi (1,545.25 km) |
| Riemst to Obidos | 1,065.85 mi (1,715.33 km) |
| Riemst to Odemira | 1,150.02 mi (1,850.78 km) |
| Riemst to Odivelas | 1,098.03 mi (1,767.11 km) |
| Riemst to Oeiras | 1,108.35 mi (1,783.72 km) |
| Riemst to Olhao | 1,159.89 mi (1,866.67 km) |
| Riemst to Oliveira de Azemeis | 963.21 mi (1,550.13 km) |
| Riemst to Oliveira de Frades | 960.15 mi (1,545.22 km) |
