| Gorna Oryahovitsa to Opwijk | 1,142.54 mi (1,838.74 km) |
| Gorna Oryahovitsa to Ostend | 1,200.21 mi (1,931.55 km) |
| Gorna Oryahovitsa to Oud-Heverlee | 1,119.59 mi (1,801.81 km) |
| Gorna Oryahovitsa to Oud-Turnhout | 1,118.86 mi (1,800.63 km) |
| Gorna Oryahovitsa to Oudenaarde | 1,163.87 mi (1,873.06 km) |
| Gorna Oryahovitsa to Oudenburg | 1,195.96 mi (1,924.71 km) |
| Gorna Oryahovitsa to Oupeye | 1,076.63 mi (1,732.67 km) |
| Gorna Oryahovitsa to Overijse | 1,123.88 mi (1,808.71 km) |
| Gorna Oryahovitsa to Overpelt | 1,098.90 mi (1,768.51 km) |
| Gorna Oryahovitsa to Paal | 1,104.08 mi (1,776.85 km) |
| Gorna Oryahovitsa to Peer | 1,095.21 mi (1,762.57 km) |
| Gorna Oryahovitsa to Pepinster | 1,066.00 mi (1,715.56 km) |
| Gorna Oryahovitsa to Peruwelz | 1,157.40 mi (1,862.65 km) |
| Gorna Oryahovitsa to Perwez | 1,108.56 mi (1,784.05 km) |
| Gorna Oryahovitsa to Philippeville | 1,110.14 mi (1,786.60 km) |
