| Oldenburg in Holstein to Octeville | 622.10 mi (1,001.18 km) |
| Oldenburg in Holstein to Oignies | 424.74 mi (683.55 km) |
| Oldenburg in Holstein to Oissel | 539.76 mi (868.66 km) |
| Oldenburg in Holstein to Olivet | 590.49 mi (950.31 km) |
| Oldenburg in Holstein to Ollioules | 804.05 mi (1,294.00 km) |
| Oldenburg in Holstein to Olonne-sur-Mer | 771.30 mi (1,241.29 km) |
| Oldenburg in Holstein to Oloron-Sainte-Marie | 926.34 mi (1,490.79 km) |
| Oldenburg in Holstein to Onet Village | 780.10 mi (1,255.44 km) |
| Oldenburg in Holstein to Onnaing | 409.06 mi (658.31 km) |
| Oldenburg in Holstein to Orange | 753.03 mi (1,211.88 km) |
| Oldenburg in Holstein to Orchies | 416.29 mi (669.95 km) |
| Oldenburg in Holstein to Orleans | 588.15 mi (946.54 km) |
| Oldenburg in Holstein to Orly | 529.01 mi (851.37 km) |
| Oldenburg in Holstein to Ormesson-sur-Marne | 522.53 mi (840.93 km) |
| Oldenburg in Holstein to Orsay | 537.50 mi (865.02 km) |
