| Portes-les-Valence to Navodari | 1,164.28 mi (1,873.73 km) |
| Portes-les-Valence to Negresti-Oas | 905.74 mi (1,457.65 km) |
| Portes-les-Valence to Nehoiu | 1,042.29 mi (1,677.41 km) |
| Portes-les-Valence to Ocna Mures | 920.91 mi (1,482.05 km) |
| Portes-les-Valence to Odobesti | 1,076.36 mi (1,732.24 km) |
| Portes-les-Valence to Odorheiu Secuiesc | 989.74 mi (1,592.83 km) |
| Portes-les-Valence to Oltenita | 1,070.90 mi (1,723.44 km) |
| Portes-les-Valence to Onesti | 1,059.90 mi (1,705.75 km) |
| Portes-les-Valence to Oradea | 830.72 mi (1,336.91 km) |
| Portes-les-Valence to Orastie | 890.15 mi (1,432.55 km) |
| Portes-les-Valence to Oravita | 820.44 mi (1,320.38 km) |
| Portes-les-Valence to Orsova | 857.33 mi (1,379.74 km) |
| Portes-les-Valence to Otelu Rosu | 850.39 mi (1,368.57 km) |
| Portes-les-Valence to Otopeni | 1,037.92 mi (1,670.37 km) |
| Portes-les-Valence to Ovidiu | 1,162.32 mi (1,870.57 km) |
