| Fort Oglethorpe to Oakley (California) | 2,023.49 mi (3,256.50 km) |
| Fort Oglethorpe to Oakton (Virginia) | 516.77 mi (831.66 km) |
| Fort Oglethorpe to Oakville (Missouri) | 371.43 mi (597.76 km) |
| Fort Oglethorpe to Oatfield (Oregon) | 2,078.42 mi (3,344.90 km) |
| Fort Oglethorpe to Ocala (Florida) | 436.84 mi (703.03 km) |
| Fort Oglethorpe to Ocean Acres (New Jersey) | 687.30 mi (1,106.10 km) |
| Fort Oglethorpe to Ocean City (New Jersey) | 658.04 mi (1,059.02 km) |
| Fort Oglethorpe to Ocean Pines (Maryland) | 607.96 mi (978.41 km) |
| Fort Oglethorpe to Ocean Pointe (Hawaii) | 4,440.32 mi (7,146.01 km) |
| Fort Oglethorpe to Ocean Springs (Mississippi) | 374.21 mi (602.23 km) |
| Fort Oglethorpe to Oceanside (California) | 1,830.84 mi (2,946.44 km) |
| Fort Oglethorpe to Oceanside (New York) | 745.41 mi (1,199.61 km) |
| Fort Oglethorpe to Ocoee (Florida) | 490.00 mi (788.58 km) |
| Fort Oglethorpe to Oconomowoc (Wisconsin) | 590.54 mi (950.39 km) |
| Fort Oglethorpe to Odenton (Maryland) | 551.27 mi (887.18 km) |
