| Birmingham to Oswego (Illinois) | 3,885.71 mi (6,253.45 km) |
| Birmingham to Oswego (New York) | 3,349.53 mi (5,390.55 km) |
| Birmingham to Otsego (Minnesota) | 3,910.19 mi (6,292.84 km) |
| Birmingham to Ottawa (Illinois) | 3,919.66 mi (6,308.08 km) |
| Birmingham to Ottawa (Kansas) | 4,295.24 mi (6,912.53 km) |
| Birmingham to Ottumwa (Iowa) | 4,070.16 mi (6,550.29 km) |
| Birmingham to Overland (Missouri) | 4,106.22 mi (6,608.32 km) |
| Birmingham to Overland Park (Kansas) | 4,259.44 mi (6,854.90 km) |
| Birmingham to Overlea (Maryland) | 3,530.63 mi (5,682.00 km) |
| Birmingham to Oviedo (Florida) | 4,237.60 mi (6,819.75 km) |
| Birmingham to Owasso (Oklahoma) | 4,433.38 mi (7,134.83 km) |
| Birmingham to Owatonna (Minnesota) | 3,952.05 mi (6,360.21 km) |
| Birmingham to Owensboro (Kentucky) | 4,026.49 mi (6,480.02 km) |
| Birmingham to Owings Mills (Maryland) | 3,539.52 mi (5,696.30 km) |
| Birmingham to Owosso (Michigan) | 3,667.15 mi (5,901.71 km) |
