| Festus to Orangevale (California) | 1,659.53 mi (2,670.75 km) |
| Festus to Orchards (Washington) | 1,716.08 mi (2,761.76 km) |
| Festus to Orcutt (California) | 1,674.55 mi (2,694.93 km) |
| Festus to Oregon (Ohio) | 438.99 mi (706.49 km) |
| Festus to Oregon (Wisconsin) | 329.52 mi (530.31 km) |
| Festus to Oregon City (Oregon) | 1,716.71 mi (2,762.78 km) |
| Festus to Orem (Utah) | 1,145.18 mi (1,842.99 km) |
| Festus to Orinda (California) | 1,720.13 mi (2,768.28 km) |
| Festus to Orland Park (Illinois) | 270.21 mi (434.86 km) |
| Festus to Orlando (Florida) | 851.82 mi (1,370.87 km) |
| Festus to Ormond Beach (Florida) | 815.03 mi (1,311.66 km) |
| Festus to Oro Valley (Arizona) | 1,223.59 mi (1,969.17 km) |
| Festus to Oroville (California) | 1,670.11 mi (2,687.78 km) |
| Festus to Oshkosh (Wisconsin) | 412.31 mi (663.55 km) |
| Festus to Oskaloosa (Iowa) | 243.11 mi (391.25 km) |
