| Nova Gorica to Octeville | 751.93 mi (1,210.12 km) |
| Nova Gorica to Oignies | 580.25 mi (933.83 km) |
| Nova Gorica to Oissel | 628.39 mi (1,011.29 km) |
| Nova Gorica to Olivet | 569.12 mi (915.90 km) |
| Nova Gorica to Ollioules | 430.14 mi (692.24 km) |
| Nova Gorica to Olonne-sur-Mer | 736.53 mi (1,185.34 km) |
| Nova Gorica to Oloron-Sainte-Marie | 725.72 mi (1,167.94 km) |
| Nova Gorica to Onet Village | 548.95 mi (883.45 km) |
| Nova Gorica to Onnaing | 554.26 mi (892.00 km) |
| Nova Gorica to Orange | 448.86 mi (722.37 km) |
| Nova Gorica to Orchies | 570.78 mi (918.58 km) |
| Nova Gorica to Orleans | 569.16 mi (915.97 km) |
| Nova Gorica to Orly | 560.13 mi (901.45 km) |
| Nova Gorica to Ormesson-sur-Marne | 554.58 mi (892.50 km) |
| Nova Gorica to Orsay | 568.30 mi (914.59 km) |
