| Fort Oglethorpe to Orangevale (California) | 1,994.04 mi (3,209.10 km) |
| Fort Oglethorpe to Orchards (Washington) | 2,077.84 mi (3,343.96 km) |
| Fort Oglethorpe to Orcutt (California) | 1,982.83 mi (3,191.05 km) |
| Fort Oglethorpe to Oregon (Ohio) | 474.62 mi (763.83 km) |
| Fort Oglethorpe to Oregon (Wisconsin) | 595.30 mi (958.04 km) |
| Fort Oglethorpe to Oregon City (Oregon) | 2,077.74 mi (3,343.80 km) |
| Fort Oglethorpe to Orem (Utah) | 1,488.41 mi (2,395.36 km) |
| Fort Oglethorpe to Orinda (California) | 2,050.48 mi (3,299.93 km) |
| Fort Oglethorpe to Orland Park (Illinois) | 482.51 mi (776.53 km) |
| Fort Oglethorpe to Orlando (Florida) | 501.55 mi (807.17 km) |
| Fort Oglethorpe to Ormond Beach (Florida) | 458.49 mi (737.87 km) |
| Fort Oglethorpe to Oro Valley (Arizona) | 1,485.49 mi (2,390.66 km) |
| Fort Oglethorpe to Oroville (California) | 2,009.26 mi (3,233.59 km) |
| Fort Oglethorpe to Oshkosh (Wisconsin) | 652.38 mi (1,049.91 km) |
| Fort Oglethorpe to Oskaloosa (Iowa) | 595.11 mi (957.74 km) |
