| Kallithea to Orangevale (California) | 6,691.80 mi (10,769.42 km) |
| Kallithea to Orchards (Washington) | 6,289.09 mi (10,121.30 km) |
| Kallithea to Orcutt (California) | 6,905.27 mi (11,112.96 km) |
| Kallithea to Oregon (Ohio) | 5,278.68 mi (8,495.21 km) |
| Kallithea to Oregon (Wisconsin) | 5,452.01 mi (8,774.16 km) |
| Kallithea to Oregon City (Oregon) | 6,311.96 mi (10,158.12 km) |
| Kallithea to Orem (Utah) | 6,339.07 mi (10,201.74 km) |
| Kallithea to Orinda (California) | 6,765.03 mi (10,887.27 km) |
| Kallithea to Orland Park (Illinois) | 5,454.88 mi (8,778.79 km) |
| Kallithea to Orlando (Florida) | 5,768.52 mi (9,283.54 km) |
| Kallithea to Ormond Beach (Florida) | 5,721.21 mi (9,207.39 km) |
| Kallithea to Oro Valley (Arizona) | 6,767.68 mi (10,891.53 km) |
| Kallithea to Oroville (California) | 6,650.17 mi (10,702.42 km) |
| Kallithea to Oshkosh (Wisconsin) | 5,370.44 mi (8,642.90 km) |
| Kallithea to Oskaloosa (Iowa) | 5,650.60 mi (9,093.77 km) |
