| Gabrovo to Oignies | 1,176.05 mi (1,892.67 km) |
| Gabrovo to Oissel | 1,237.84 mi (1,992.11 km) |
| Gabrovo to Olivet | 1,183.48 mi (1,904.63 km) |
| Gabrovo to Ollioules | 982.59 mi (1,581.32 km) |
| Gabrovo to Olonne-sur-Mer | 1,348.14 mi (2,169.62 km) |
| Gabrovo to Oloron-Sainte-Marie | 1,305.07 mi (2,100.31 km) |
| Gabrovo to Onet Village | 1,138.51 mi (1,832.25 km) |
| Gabrovo to Onnaing | 1,149.02 mi (1,849.16 km) |
| Gabrovo to Orange | 1,029.63 mi (1,657.02 km) |
| Gabrovo to Orchies | 1,165.69 mi (1,876.00 km) |
| Gabrovo to Orleans | 1,183.48 mi (1,904.63 km) |
| Gabrovo to Orly | 1,171.69 mi (1,885.66 km) |
| Gabrovo to Ormesson-sur-Marne | 1,165.80 mi (1,876.17 km) |
| Gabrovo to Orsay | 1,180.24 mi (1,899.41 km) |
| Gabrovo to Orthez | 1,310.57 mi (2,109.16 km) |
