| Zachary to Octeville | 4,618.58 mi (7,432.89 km) |
| Zachary to Oignies | 4,787.33 mi (7,704.47 km) |
| Zachary to Oissel | 4,739.93 mi (7,628.17 km) |
| Zachary to Olivet | 4,814.05 mi (7,747.46 km) |
| Zachary to Ollioules | 5,127.36 mi (8,251.68 km) |
| Zachary to Olonne-sur-Mer | 4,690.43 mi (7,548.51 km) |
| Zachary to Oloron-Sainte-Marie | 4,832.43 mi (7,777.05 km) |
| Zachary to Onet Village | 4,944.28 mi (7,957.04 km) |
| Zachary to Onnaing | 4,813.96 mi (7,747.31 km) |
| Zachary to Orange | 5,049.79 mi (8,126.85 km) |
| Zachary to Orchies | 4,797.28 mi (7,720.48 km) |
| Zachary to Orleans | 4,813.33 mi (7,746.31 km) |
| Zachary to Orly | 4,810.36 mi (7,741.53 km) |
| Zachary to Ormesson-sur-Marne | 4,815.26 mi (7,749.42 km) |
| Zachary to Orsay | 4,803.05 mi (7,729.77 km) |
