| Ermelo to Navodari | 1,184.77 mi (1,906.70 km) |
| Ermelo to Negresti-Oas | 844.03 mi (1,358.34 km) |
| Ermelo to Nehoiu | 1,051.26 mi (1,691.84 km) |
| Ermelo to Ocna Mures | 913.68 mi (1,470.43 km) |
| Ermelo to Odobesti | 1,066.07 mi (1,715.67 km) |
| Ermelo to Odorheiu Secuiesc | 974.37 mi (1,568.10 km) |
| Ermelo to Oltenita | 1,116.19 mi (1,796.34 km) |
| Ermelo to Onesti | 1,035.90 mi (1,667.12 km) |
| Ermelo to Oradea | 810.97 mi (1,305.13 km) |
| Ermelo to Orastie | 908.73 mi (1,462.45 km) |
| Ermelo to Oravita | 885.25 mi (1,424.67 km) |
| Ermelo to Orsova | 925.87 mi (1,490.04 km) |
| Ermelo to Otelu Rosu | 889.66 mi (1,431.77 km) |
| Ermelo to Otopeni | 1,074.47 mi (1,729.20 km) |
| Ermelo to Ovidiu | 1,184.71 mi (1,906.60 km) |
