| Valley Center to Orangeburg (South Carolina) | 2,075.36 mi (3,339.97 km) |
| Valley Center to Orangevale (California) | 444.13 mi (714.76 km) |
| Valley Center to Orchards (Washington) | 908.93 mi (1,462.78 km) |
| Valley Center to Orcutt (California) | 225.38 mi (362.71 km) |
| Valley Center to Oregon (Ohio) | 1,918.09 mi (3,086.87 km) |
| Valley Center to Oregon (Wisconsin) | 1,635.21 mi (2,631.62 km) |
| Valley Center to Oregon City (Oregon) | 887.62 mi (1,428.49 km) |
| Valley Center to Orem (Utah) | 569.71 mi (916.86 km) |
| Valley Center to Orinda (California) | 432.69 mi (696.34 km) |
| Valley Center to Orland Park (Illinois) | 1,691.41 mi (2,722.06 km) |
| Valley Center to Orlando (Florida) | 2,131.23 mi (3,429.88 km) |
| Valley Center to Ormond Beach (Florida) | 2,127.99 mi (3,424.68 km) |
| Valley Center to Oro Valley (Arizona) | 355.04 mi (571.38 km) |
| Valley Center to Oroville (California) | 501.32 mi (806.80 km) |
| Valley Center to Oshkosh (Wisconsin) | 1,695.61 mi (2,728.82 km) |
