| Merzenich to Navodari | 1,117.83 mi (1,798.97 km) |
| Merzenich to Negresti-Oas | 785.60 mi (1,264.30 km) |
| Merzenich to Nehoiu | 984.19 mi (1,583.91 km) |
| Merzenich to Ocna Mures | 846.63 mi (1,362.53 km) |
| Merzenich to Odobesti | 1,002.75 mi (1,613.77 km) |
| Merzenich to Odorheiu Secuiesc | 910.20 mi (1,464.82 km) |
| Merzenich to Oltenita | 1,043.98 mi (1,680.13 km) |
| Merzenich to Onesti | 974.58 mi (1,568.44 km) |
| Merzenich to Oradea | 743.43 mi (1,196.43 km) |
| Merzenich to Orastie | 836.99 mi (1,347.01 km) |
| Merzenich to Oravita | 805.41 mi (1,296.18 km) |
| Merzenich to Orsova | 846.39 mi (1,362.13 km) |
| Merzenich to Otelu Rosu | 813.99 mi (1,309.99 km) |
| Merzenich to Otopeni | 1,003.04 mi (1,614.24 km) |
| Merzenich to Ovidiu | 1,117.43 mi (1,798.34 km) |
