| Fort Wayne to Octeville | 3,884.61 mi (6,251.67 km) |
| Fort Wayne to Oignies | 4,041.94 mi (6,504.88 km) |
| Fort Wayne to Oissel | 4,003.18 mi (6,442.49 km) |
| Fort Wayne to Olivet | 4,083.87 mi (6,572.35 km) |
| Fort Wayne to Ollioules | 4,415.28 mi (7,105.71 km) |
| Fort Wayne to Olonne-sur-Mer | 3,974.86 mi (6,396.92 km) |
| Fort Wayne to Oloron-Sainte-Marie | 4,135.68 mi (6,655.74 km) |
| Fort Wayne to Onet Village | 4,232.68 mi (6,811.84 km) |
| Fort Wayne to Onnaing | 4,068.06 mi (6,546.90 km) |
| Fort Wayne to Orange | 4,334.47 mi (6,975.65 km) |
| Fort Wayne to Orchies | 4,051.49 mi (6,520.25 km) |
| Fort Wayne to Orleans | 4,082.93 mi (6,570.83 km) |
| Fort Wayne to Orly | 4,074.61 mi (6,557.46 km) |
| Fort Wayne to Ormesson-sur-Marne | 4,079.05 mi (6,564.60 km) |
| Fort Wayne to Orsay | 4,067.90 mi (6,546.64 km) |
