| Zonguldak to Octeville | 1,697.39 mi (2,731.69 km) |
| Zonguldak to Oignies | 1,504.71 mi (2,421.60 km) |
| Zonguldak to Oissel | 1,573.13 mi (2,531.71 km) |
| Zonguldak to Olivet | 1,523.72 mi (2,452.19 km) |
| Zonguldak to Ollioules | 1,326.02 mi (2,134.03 km) |
| Zonguldak to Olonne-sur-Mer | 1,691.68 mi (2,722.49 km) |
| Zonguldak to Oloron-Sainte-Marie | 1,649.35 mi (2,654.38 km) |
| Zonguldak to Onet Village | 1,483.51 mi (2,387.48 km) |
| Zonguldak to Onnaing | 1,477.53 mi (2,377.85 km) |
| Zonguldak to Orange | 1,374.48 mi (2,212.01 km) |
| Zonguldak to Orchies | 1,494.08 mi (2,404.49 km) |
| Zonguldak to Orleans | 1,523.60 mi (2,452.00 km) |
| Zonguldak to Orly | 1,508.75 mi (2,428.10 km) |
| Zonguldak to Ormesson-sur-Marne | 1,502.62 mi (2,418.24 km) |
| Zonguldak to Orsay | 1,517.56 mi (2,442.27 km) |
