| Bay City to Octeville | 3,727.10 mi (5,998.18 km) |
| Bay City to Oignies | 3,880.31 mi (6,244.76 km) |
| Bay City to Oissel | 3,844.54 mi (6,187.19 km) |
| Bay City to Olivet | 3,927.28 mi (6,320.34 km) |
| Bay City to Ollioules | 4,263.91 mi (6,862.09 km) |
| Bay City to Olonne-sur-Mer | 3,823.24 mi (6,152.92 km) |
| Bay City to Oloron-Sainte-Marie | 3,989.68 mi (6,420.77 km) |
| Bay City to Onet Village | 4,081.81 mi (6,569.04 km) |
| Bay City to Onnaing | 3,906.22 mi (6,286.45 km) |
| Bay City to Orange | 4,182.22 mi (6,730.63 km) |
| Bay City to Orchies | 3,889.71 mi (6,259.89 km) |
| Bay City to Orleans | 3,926.26 mi (6,318.71 km) |
| Bay City to Orly | 3,916.19 mi (6,302.51 km) |
| Bay City to Ormesson-sur-Marne | 3,920.47 mi (6,309.39 km) |
| Bay City to Orsay | 3,909.68 mi (6,292.03 km) |
