| Ferguson to Orbetello | 4,980.83 mi (8,015.87 km) |
| Ferguson to Oria | 5,324.28 mi (8,568.60 km) |
| Ferguson to Oristano | 4,974.29 mi (8,005.35 km) |
| Ferguson to Orta Nova | 5,210.45 mi (8,385.41 km) |
| Ferguson to Orte | 5,027.82 mi (8,091.49 km) |
| Ferguson to Ortona | 5,113.73 mi (8,229.75 km) |
| Ferguson to Orvieto | 5,005.88 mi (8,056.18 km) |
| Ferguson to Orzinuovi | 4,809.51 mi (7,740.16 km) |
| Ferguson to Osimo | 5,029.01 mi (8,093.42 km) |
| Ferguson to Ospitaletto | 4,808.90 mi (7,739.18 km) |
| Ferguson to Ostuni | 5,311.84 mi (8,548.58 km) |
| Ferguson to Ottaviano | 5,181.36 mi (8,338.60 km) |
| Ferguson to Ovada | 4,787.89 mi (7,705.37 km) |
| Ferguson to Ozieri | 4,964.37 mi (7,989.38 km) |
| Ferguson to Paceco | 5,224.04 mi (8,407.28 km) |
