| Buffalo to Octeville | 3,552.31 mi (5,716.89 km) |
| Buffalo to Oignies | 3,714.28 mi (5,977.55 km) |
| Buffalo to Oissel | 3,671.98 mi (5,909.48 km) |
| Buffalo to Olivet | 3,750.46 mi (6,035.78 km) |
| Buffalo to Ollioules | 4,077.19 mi (6,561.60 km) |
| Buffalo to Olonne-sur-Mer | 3,637.22 mi (5,853.54 km) |
| Buffalo to Oloron-Sainte-Marie | 3,794.33 mi (6,106.39 km) |
| Buffalo to Onet Village | 3,894.33 mi (6,267.31 km) |
| Buffalo to Onnaing | 3,740.64 mi (6,019.98 km) |
| Buffalo to Orange | 3,997.07 mi (6,432.67 km) |
| Buffalo to Orchies | 3,724.01 mi (5,993.22 km) |
| Buffalo to Orleans | 3,749.59 mi (6,034.38 km) |
| Buffalo to Orly | 3,743.11 mi (6,023.95 km) |
| Buffalo to Ormesson-sur-Marne | 3,747.72 mi (6,031.37 km) |
| Buffalo to Orsay | 3,736.17 mi (6,012.79 km) |
