| Port Washington to Octeville | 3,421.06 mi (5,505.66 km) |
| Port Washington to Oignies | 3,594.73 mi (5,785.16 km) |
| Port Washington to Oissel | 3,543.23 mi (5,702.27 km) |
| Port Washington to Olivet | 3,614.94 mi (5,817.69 km) |
| Port Washington to Ollioules | 3,925.11 mi (6,316.85 km) |
| Port Washington to Olonne-sur-Mer | 3,488.60 mi (5,614.36 km) |
| Port Washington to Oloron-Sainte-Marie | 3,630.51 mi (5,842.75 km) |
| Port Washington to Onet Village | 3,742.04 mi (6,022.24 km) |
| Port Washington to Onnaing | 3,621.57 mi (5,828.36 km) |
| Port Washington to Orange | 3,847.77 mi (6,192.39 km) |
| Port Washington to Orchies | 3,604.88 mi (5,801.49 km) |
| Port Washington to Orleans | 3,614.30 mi (5,816.65 km) |
| Port Washington to Orly | 3,613.13 mi (5,814.77 km) |
| Port Washington to Ormesson-sur-Marne | 3,618.20 mi (5,822.94 km) |
| Port Washington to Orsay | 3,605.62 mi (5,802.68 km) |
