| Duchcov to Oignies | 471.88 mi (759.42 km) |
| Duchcov to Oissel | 568.35 mi (914.67 km) |
| Duchcov to Olivet | 566.22 mi (911.24 km) |
| Duchcov to Ollioules | 635.79 mi (1,023.21 km) |
| Duchcov to Olonne-sur-Mer | 761.36 mi (1,225.29 km) |
| Duchcov to Oloron-Sainte-Marie | 846.85 mi (1,362.87 km) |
| Duchcov to Onet Village | 674.74 mi (1,085.89 km) |
| Duchcov to Onnaing | 445.95 mi (717.68 km) |
| Duchcov to Orange | 611.07 mi (983.42 km) |
| Duchcov to Orchies | 460.88 mi (741.71 km) |
| Duchcov to Orleans | 564.79 mi (908.93 km) |
| Duchcov to Orly | 523.09 mi (841.83 km) |
| Duchcov to Ormesson-sur-Marne | 515.88 mi (830.24 km) |
| Duchcov to Orsay | 532.96 mi (857.72 km) |
| Duchcov to Orthez | 839.56 mi (1,351.13 km) |
