| Storm Lake to Octeville | 4,206.73 mi (6,770.08 km) |
| Storm Lake to Oignies | 4,344.86 mi (6,992.37 km) |
| Storm Lake to Oissel | 4,319.81 mi (6,952.06 km) |
| Storm Lake to Olivet | 4,408.70 mi (7,095.12 km) |
| Storm Lake to Ollioules | 4,758.83 mi (7,658.59 km) |
| Storm Lake to Olonne-sur-Mer | 4,319.58 mi (6,951.69 km) |
| Storm Lake to Oloron-Sainte-Marie | 4,499.12 mi (7,240.63 km) |
| Storm Lake to Onet Village | 4,578.89 mi (7,369.02 km) |
| Storm Lake to Onnaing | 4,369.82 mi (7,032.54 km) |
| Storm Lake to Orange | 4,675.14 mi (7,523.90 km) |
| Storm Lake to Orchies | 4,353.64 mi (7,006.51 km) |
| Storm Lake to Orleans | 4,407.47 mi (7,093.13 km) |
| Storm Lake to Orly | 4,391.78 mi (7,067.89 km) |
| Storm Lake to Ormesson-sur-Marne | 4,395.50 mi (7,073.87 km) |
| Storm Lake to Orsay | 4,385.99 mi (7,058.58 km) |
