| Gretz-Armainvilliers to Navodari | 1,260.79 mi (2,029.04 km) |
| Gretz-Armainvilliers to Negresti-Oas | 949.85 mi (1,528.63 km) |
| Gretz-Armainvilliers to Nehoiu | 1,129.30 mi (1,817.43 km) |
| Gretz-Armainvilliers to Ocna Mures | 994.87 mi (1,601.09 km) |
| Gretz-Armainvilliers to Odobesti | 1,154.33 mi (1,857.71 km) |
| Gretz-Armainvilliers to Odorheiu Secuiesc | 1,062.11 mi (1,709.30 km) |
| Gretz-Armainvilliers to Oltenita | 1,177.66 mi (1,895.26 km) |
| Gretz-Armainvilliers to Onesti | 1,130.12 mi (1,818.75 km) |
| Gretz-Armainvilliers to Oradea | 893.69 mi (1,438.25 km) |
| Gretz-Armainvilliers to Orastie | 976.45 mi (1,571.45 km) |
| Gretz-Armainvilliers to Oravita | 927.88 mi (1,493.29 km) |
| Gretz-Armainvilliers to Orsova | 968.44 mi (1,558.56 km) |
| Gretz-Armainvilliers to Otelu Rosu | 945.81 mi (1,522.14 km) |
| Gretz-Armainvilliers to Otopeni | 1,139.16 mi (1,833.30 km) |
| Gretz-Armainvilliers to Ovidiu | 1,259.76 mi (2,027.39 km) |
