| Ilhavo to Navodari | 1,900.97 mi (3,059.31 km) |
| Ilhavo to Negresti-Oas | 1,652.46 mi (2,659.37 km) |
| Ilhavo to Nehoiu | 1,783.53 mi (2,870.31 km) |
| Ilhavo to Ocna Mures | 1,665.96 mi (2,681.10 km) |
| Ilhavo to Odobesti | 1,819.48 mi (2,928.17 km) |
| Ilhavo to Odorheiu Secuiesc | 1,734.56 mi (2,791.51 km) |
| Ilhavo to Oltenita | 1,804.88 mi (2,904.67 km) |
| Ilhavo to Onesti | 1,804.62 mi (2,904.25 km) |
| Ilhavo to Oradea | 1,577.31 mi (2,538.43 km) |
| Ilhavo to Orastie | 1,633.26 mi (2,628.47 km) |
| Ilhavo to Oravita | 1,558.90 mi (2,508.81 km) |
| Ilhavo to Orsova | 1,593.72 mi (2,564.85 km) |
| Ilhavo to Otelu Rosu | 1,591.86 mi (2,561.85 km) |
| Ilhavo to Otopeni | 1,774.65 mi (2,856.02 km) |
| Ilhavo to Ovidiu | 1,898.68 mi (3,055.62 km) |
