| Mechernich to Navodari | 1,108.62 mi (1,784.15 km) |
| Mechernich to Negresti-Oas | 778.08 mi (1,252.19 km) |
| Mechernich to Nehoiu | 975.05 mi (1,569.18 km) |
| Mechernich to Ocna Mures | 837.60 mi (1,347.99 km) |
| Mechernich to Odobesti | 994.21 mi (1,600.03 km) |
| Mechernich to Odorheiu Secuiesc | 901.59 mi (1,450.97 km) |
| Mechernich to Oltenita | 1,033.94 mi (1,663.97 km) |
| Mechernich to Onesti | 966.40 mi (1,555.26 km) |
| Mechernich to Oradea | 734.42 mi (1,181.94 km) |
| Mechernich to Orastie | 827.18 mi (1,331.22 km) |
| Mechernich to Oravita | 794.24 mi (1,278.20 km) |
| Mechernich to Orsova | 835.24 mi (1,344.19 km) |
| Mechernich to Otelu Rosu | 803.52 mi (1,293.15 km) |
| Mechernich to Otopeni | 993.15 mi (1,598.33 km) |
| Mechernich to Ovidiu | 1,108.17 mi (1,783.43 km) |
