| Lake Ronkonkoma to Octeville | 3,397.04 mi (5,467.01 km) |
| Lake Ronkonkoma to Oignies | 3,571.42 mi (5,747.65 km) |
| Lake Ronkonkoma to Oissel | 3,519.34 mi (5,663.83 km) |
| Lake Ronkonkoma to Olivet | 3,590.61 mi (5,778.52 km) |
| Lake Ronkonkoma to Ollioules | 3,899.71 mi (6,275.97 km) |
| Lake Ronkonkoma to Olonne-sur-Mer | 3,463.49 mi (5,573.95 km) |
| Lake Ronkonkoma to Oloron-Sainte-Marie | 3,604.50 mi (5,800.88 km) |
| Lake Ronkonkoma to Onet Village | 3,716.67 mi (5,981.40 km) |
| Lake Ronkonkoma to Onnaing | 3,598.29 mi (5,790.90 km) |
| Lake Ronkonkoma to Orange | 3,822.54 mi (6,151.79 km) |
| Lake Ronkonkoma to Orchies | 3,581.60 mi (5,764.03 km) |
| Lake Ronkonkoma to Orleans | 3,589.97 mi (5,777.51 km) |
| Lake Ronkonkoma to Orly | 3,589.15 mi (5,776.17 km) |
| Lake Ronkonkoma to Ormesson-sur-Marne | 3,594.25 mi (5,784.38 km) |
| Lake Ronkonkoma to Orsay | 3,581.60 mi (5,764.02 km) |
