| DeKalb to Orangevale (California) | 1,715.14 mi (2,760.26 km) |
| DeKalb to Orchards (Washington) | 1,691.43 mi (2,722.09 km) |
| DeKalb to Orcutt (California) | 1,771.87 mi (2,851.54 km) |
| DeKalb to Oregon (Ohio) | 274.48 mi (441.73 km) |
| DeKalb to Oregon (Wisconsin) | 76.06 mi (122.40 km) |
| DeKalb to Oregon City (Oregon) | 1,695.99 mi (2,729.43 km) |
| DeKalb to Orem (Utah) | 1,196.44 mi (1,925.48 km) |
| DeKalb to Orinda (California) | 1,782.30 mi (2,868.34 km) |
| DeKalb to Orland Park (Illinois) | 50.86 mi (81.84 km) |
| DeKalb to Orlando (Florida) | 1,018.38 mi (1,638.93 km) |
| DeKalb to Ormond Beach (Florida) | 971.78 mi (1,563.92 km) |
| DeKalb to Oro Valley (Arizona) | 1,383.12 mi (2,225.92 km) |
| DeKalb to Oroville (California) | 1,716.18 mi (2,761.93 km) |
| DeKalb to Oshkosh (Wisconsin) | 144.80 mi (233.03 km) |
| DeKalb to Oskaloosa (Iowa) | 205.84 mi (331.27 km) |
