| Haskovo to Opwijk | 1,187.50 mi (1,911.09 km) |
| Haskovo to Ostend | 1,244.99 mi (2,003.63 km) |
| Haskovo to Oud-Heverlee | 1,164.51 mi (1,874.09 km) |
| Haskovo to Oud-Turnhout | 1,166.00 mi (1,876.49 km) |
| Haskovo to Oudenaarde | 1,207.82 mi (1,943.80 km) |
| Haskovo to Oudenburg | 1,240.66 mi (1,996.64 km) |
| Haskovo to Oupeye | 1,122.08 mi (1,805.81 km) |
| Haskovo to Overijse | 1,168.46 mi (1,880.46 km) |
| Haskovo to Overpelt | 1,146.13 mi (1,844.51 km) |
| Haskovo to Paal | 1,150.34 mi (1,851.30 km) |
| Haskovo to Peer | 1,142.14 mi (1,838.10 km) |
| Haskovo to Pepinster | 1,111.06 mi (1,788.08 km) |
| Haskovo to Peruwelz | 1,200.01 mi (1,931.24 km) |
| Haskovo to Perwez | 1,152.79 mi (1,855.23 km) |
| Haskovo to Philippeville | 1,152.36 mi (1,854.54 km) |
