| Sidney to Octeville | 3,880.00 mi (6,244.26 km) |
| Sidney to Oignies | 4,040.56 mi (6,502.66 km) |
| Sidney to Oissel | 3,999.39 mi (6,436.39 km) |
| Sidney to Olivet | 4,078.44 mi (6,563.61 km) |
| Sidney to Ollioules | 4,405.85 mi (7,090.53 km) |
| Sidney to Olonne-sur-Mer | 3,965.85 mi (6,382.42 km) |
| Sidney to Oloron-Sainte-Marie | 4,122.77 mi (6,634.96 km) |
| Sidney to Onet Village | 4,223.00 mi (6,796.26 km) |
| Sidney to Onnaing | 4,066.84 mi (6,544.95 km) |
| Sidney to Orange | 4,325.69 mi (6,961.53 km) |
| Sidney to Orchies | 4,050.24 mi (6,518.22 km) |
| Sidney to Orleans | 4,077.55 mi (6,562.19 km) |
| Sidney to Orly | 4,070.61 mi (6,551.01 km) |
| Sidney to Ormesson-sur-Marne | 4,075.17 mi (6,558.36 km) |
| Sidney to Orsay | 4,063.73 mi (6,539.94 km) |
