| Haaltert to Navodari | 1,226.12 mi (1,973.25 km) |
| Haaltert to Negresti-Oas | 895.55 mi (1,441.25 km) |
| Haaltert to Nehoiu | 1,092.58 mi (1,758.33 km) |
| Haaltert to Ocna Mures | 955.19 mi (1,537.22 km) |
| Haaltert to Odobesti | 1,111.89 mi (1,789.41 km) |
| Haaltert to Odorheiu Secuiesc | 1,019.26 mi (1,640.34 km) |
| Haaltert to Oltenita | 1,150.86 mi (1,852.12 km) |
| Haaltert to Onesti | 1,084.06 mi (1,744.63 km) |
| Haaltert to Oradea | 852.02 mi (1,371.19 km) |
| Haaltert to Orastie | 944.33 mi (1,519.76 km) |
| Haaltert to Oravita | 909.69 mi (1,464.01 km) |
| Haaltert to Orsova | 950.73 mi (1,530.05 km) |
| Haaltert to Otelu Rosu | 920.03 mi (1,480.65 km) |
| Haaltert to Otopeni | 1,110.22 mi (1,786.72 km) |
| Haaltert to Ovidiu | 1,225.64 mi (1,972.48 km) |
