| Ermont to Navodari | 1,283.59 mi (2,065.75 km) |
| Ermont to Negresti-Oas | 970.19 mi (1,561.37 km) |
| Ermont to Nehoiu | 1,151.79 mi (1,853.63 km) |
| Ermont to Ocna Mures | 1,016.92 mi (1,636.58 km) |
| Ermont to Odobesti | 1,176.25 mi (1,892.99 km) |
| Ermont to Odorheiu Secuiesc | 1,083.90 mi (1,744.36 km) |
| Ermont to Oltenita | 1,201.15 mi (1,933.07 km) |
| Ermont to Onesti | 1,151.62 mi (1,853.36 km) |
| Ermont to Oradea | 915.39 mi (1,473.17 km) |
| Ermont to Orastie | 999.25 mi (1,608.14 km) |
| Ermont to Oravita | 951.89 mi (1,531.93 km) |
| Ermont to Orsova | 992.54 mi (1,597.34 km) |
| Ermont to Otelu Rosu | 969.17 mi (1,559.73 km) |
| Ermont to Otopeni | 1,162.42 mi (1,870.74 km) |
| Ermont to Ovidiu | 1,282.62 mi (2,064.18 km) |
