| Asenovgrad to Navodari | 246.93 mi (397.39 km) |
| Asenovgrad to Negresti-Oas | 410.47 mi (660.59 km) |
| Asenovgrad to Nehoiu | 241.45 mi (388.58 km) |
| Asenovgrad to Ocna Mures | 306.24 mi (492.85 km) |
| Asenovgrad to Odobesti | 281.27 mi (452.67 km) |
| Asenovgrad to Odorheiu Secuiesc | 297.69 mi (479.08 km) |
| Asenovgrad to Oltenita | 168.64 mi (271.39 km) |
| Asenovgrad to Onesti | 307.87 mi (495.47 km) |
| Asenovgrad to Oradea | 378.15 mi (608.57 km) |
| Asenovgrad to Orastie | 277.52 mi (446.62 km) |
| Asenovgrad to Oravita | 262.71 mi (422.80 km) |
| Asenovgrad to Orsova | 224.52 mi (361.33 km) |
| Asenovgrad to Otelu Rosu | 272.50 mi (438.55 km) |
| Asenovgrad to Otopeni | 185.20 mi (298.05 km) |
| Asenovgrad to Ovidiu | 242.66 mi (390.53 km) |
