| Asenovgrad to Opwijk | 1,155.99 mi (1,860.39 km) |
| Asenovgrad to Ostend | 1,213.41 mi (1,952.79 km) |
| Asenovgrad to Oud-Heverlee | 1,133.00 mi (1,823.39 km) |
| Asenovgrad to Oud-Turnhout | 1,135.09 mi (1,826.75 km) |
| Asenovgrad to Oudenaarde | 1,176.04 mi (1,892.66 km) |
| Asenovgrad to Oudenburg | 1,209.05 mi (1,945.78 km) |
| Asenovgrad to Oupeye | 1,090.74 mi (1,755.38 km) |
| Asenovgrad to Overijse | 1,136.87 mi (1,829.62 km) |
| Asenovgrad to Overpelt | 1,115.26 mi (1,794.83 km) |
| Asenovgrad to Paal | 1,119.21 mi (1,801.19 km) |
| Asenovgrad to Peer | 1,111.20 mi (1,788.30 km) |
| Asenovgrad to Pepinster | 1,079.63 mi (1,737.49 km) |
| Asenovgrad to Peruwelz | 1,167.92 mi (1,879.58 km) |
| Asenovgrad to Perwez | 1,121.11 mi (1,804.26 km) |
| Asenovgrad to Philippeville | 1,120.19 mi (1,802.78 km) |
