| Dour to Navodari | 1,228.77 mi (1,977.52 km) |
| Dour to Negresti-Oas | 902.25 mi (1,452.03 km) |
| Dour to Nehoiu | 1,095.50 mi (1,763.03 km) |
| Dour to Ocna Mures | 958.53 mi (1,542.60 km) |
| Dour to Odobesti | 1,116.19 mi (1,796.34 km) |
| Dour to Odorheiu Secuiesc | 1,023.49 mi (1,647.14 km) |
| Dour to Oltenita | 1,151.56 mi (1,853.26 km) |
| Dour to Onesti | 1,089.18 mi (1,752.86 km) |
| Dour to Oradea | 855.56 mi (1,376.90 km) |
| Dour to Orastie | 945.86 mi (1,522.22 km) |
| Dour to Oravita | 907.90 mi (1,461.12 km) |
| Dour to Orsova | 948.93 mi (1,527.15 km) |
| Dour to Otelu Rosu | 920.02 mi (1,480.63 km) |
| Dour to Otopeni | 1,111.35 mi (1,788.54 km) |
| Dour to Ovidiu | 1,228.17 mi (1,976.55 km) |
