| Haapsalu to Navodari | 1,032.46 mi (1,661.58 km) |
| Haapsalu to Negresti-Oas | 764.88 mi (1,230.95 km) |
| Haapsalu to Nehoiu | 945.81 mi (1,522.13 km) |
| Haapsalu to Ocna Mures | 867.18 mi (1,395.59 km) |
| Haapsalu to Odobesti | 921.91 mi (1,483.66 km) |
| Haapsalu to Odorheiu Secuiesc | 875.38 mi (1,408.79 km) |
| Haapsalu to Oltenita | 1,034.54 mi (1,664.93 km) |
| Haapsalu to Onesti | 886.31 mi (1,426.38 km) |
| Haapsalu to Oradea | 822.64 mi (1,323.92 km) |
| Haapsalu to Orastie | 904.50 mi (1,455.65 km) |
| Haapsalu to Oravita | 963.48 mi (1,550.57 km) |
| Haapsalu to Orsova | 983.28 mi (1,582.43 km) |
| Haapsalu to Otelu Rosu | 928.61 mi (1,494.46 km) |
| Haapsalu to Otopeni | 999.90 mi (1,609.19 km) |
| Haapsalu to Ovidiu | 1,035.47 mi (1,666.43 km) |
