| Gabrovo to Opwijk | 1,138.49 mi (1,832.22 km) |
| Gabrovo to Ostend | 1,196.12 mi (1,924.97 km) |
| Gabrovo to Oud-Heverlee | 1,115.51 mi (1,795.25 km) |
| Gabrovo to Oud-Turnhout | 1,115.63 mi (1,795.43 km) |
| Gabrovo to Oudenaarde | 1,159.45 mi (1,865.95 km) |
| Gabrovo to Oudenburg | 1,191.84 mi (1,918.07 km) |
| Gabrovo to Oupeye | 1,072.74 mi (1,726.40 km) |
| Gabrovo to Overijse | 1,119.68 mi (1,801.95 km) |
| Gabrovo to Overpelt | 1,095.70 mi (1,763.36 km) |
| Gabrovo to Paal | 1,100.51 mi (1,771.10 km) |
| Gabrovo to Peer | 1,091.89 mi (1,757.23 km) |
| Gabrovo to Pepinster | 1,061.95 mi (1,709.05 km) |
| Gabrovo to Peruwelz | 1,152.49 mi (1,854.75 km) |
| Gabrovo to Perwez | 1,104.22 mi (1,777.07 km) |
| Gabrovo to Philippeville | 1,105.06 mi (1,778.42 km) |
