| Casier to Orangevale (California) | 5,936.12 mi (9,553.26 km) |
| Casier to Orchards (Washington) | 5,552.51 mi (8,935.90 km) |
| Casier to Orcutt (California) | 6,140.39 mi (9,882.00 km) |
| Casier to Oregon (Ohio) | 4,489.03 mi (7,224.40 km) |
| Casier to Oregon (Wisconsin) | 4,661.17 mi (7,501.42 km) |
| Casier to Oregon City (Oregon) | 5,574.75 mi (8,971.70 km) |
| Casier to Orem (Utah) | 5,564.77 mi (8,955.63 km) |
| Casier to Orinda (California) | 6,010.48 mi (9,672.93 km) |
| Casier to Orland Park (Illinois) | 4,664.09 mi (7,506.12 km) |
| Casier to Orlando (Florida) | 5,003.97 mi (8,053.11 km) |
| Casier to Ormond Beach (Florida) | 4,954.94 mi (7,974.21 km) |
| Casier to Oro Valley (Arizona) | 5,982.27 mi (9,627.53 km) |
| Casier to Oroville (California) | 5,897.08 mi (9,490.43 km) |
| Casier to Oshkosh (Wisconsin) | 4,579.71 mi (7,370.32 km) |
| Casier to Oskaloosa (Iowa) | 4,859.88 mi (7,821.22 km) |
