| Celje to Octeville | 815.15 mi (1,311.86 km) |
| Celje to Oignies | 633.87 mi (1,020.11 km) |
| Celje to Oissel | 690.95 mi (1,111.98 km) |
| Celje to Olivet | 638.41 mi (1,027.42 km) |
| Celje to Ollioules | 509.38 mi (819.77 km) |
| Celje to Olonne-sur-Mer | 810.83 mi (1,304.91 km) |
| Celje to Oloron-Sainte-Marie | 805.69 mi (1,296.64 km) |
| Celje to Onet Village | 628.62 mi (1,011.67 km) |
| Celje to Onnaing | 607.20 mi (977.19 km) |
| Celje to Orange | 529.03 mi (851.38 km) |
| Celje to Orchies | 623.88 mi (1,004.03 km) |
| Celje to Orleans | 638.27 mi (1,027.19 km) |
| Celje to Orly | 624.70 mi (1,005.36 km) |
| Celje to Ormesson-sur-Marne | 618.78 mi (995.84 km) |
| Celje to Orsay | 633.29 mi (1,019.17 km) |
