| Romilly-sur-Seine to Montemor-o-Novo | 904.48 mi (1,455.61 km) |
| Romilly-sur-Seine to Montemor-o-Velho | 839.97 mi (1,351.79 km) |
| Romilly-sur-Seine to Montijo | 925.35 mi (1,489.20 km) |
| Romilly-sur-Seine to Mortagua | 810.36 mi (1,304.15 km) |
| Romilly-sur-Seine to Moura | 909.16 mi (1,463.14 km) |
| Romilly-sur-Seine to Murtosa | 809.71 mi (1,303.11 km) |
| Romilly-sur-Seine to Nazare | 882.66 mi (1,420.50 km) |
| Romilly-sur-Seine to Nelas | 792.56 mi (1,275.50 km) |
| Romilly-sur-Seine to Obidos | 898.42 mi (1,445.87 km) |
| Romilly-sur-Seine to Odemira | 977.26 mi (1,572.75 km) |
| Romilly-sur-Seine to Odivelas | 929.12 mi (1,495.27 km) |
| Romilly-sur-Seine to Oeiras | 939.52 mi (1,512.01 km) |
| Romilly-sur-Seine to Olhao | 984.78 mi (1,584.85 km) |
| Romilly-sur-Seine to Oliveira de Azemeis | 798.65 mi (1,285.31 km) |
| Romilly-sur-Seine to Oliveira de Frades | 794.23 mi (1,278.19 km) |
