| Cincinnati to Orangevale (California) | 1,960.40 mi (3,154.96 km) |
| Cincinnati to Orchards (Washington) | 1,971.95 mi (3,173.55 km) |
| Cincinnati to Orcutt (California) | 1,990.46 mi (3,203.33 km) |
| Cincinnati to Oregon (Ohio) | 182.47 mi (293.65 km) |
| Cincinnati to Oregon (Wisconsin) | 364.74 mi (586.99 km) |
| Cincinnati to Oregon City (Oregon) | 1,975.28 mi (3,178.90 km) |
| Cincinnati to Orem (Utah) | 1,441.73 mi (2,320.24 km) |
| Cincinnati to Orinda (California) | 2,023.96 mi (3,257.24 km) |
| Cincinnati to Orland Park (Illinois) | 245.40 mi (394.93 km) |
| Cincinnati to Orlando (Florida) | 758.79 mi (1,221.15 km) |
| Cincinnati to Ormond Beach (Florida) | 707.18 mi (1,138.10 km) |
| Cincinnati to Oro Valley (Arizona) | 1,548.26 mi (2,491.68 km) |
| Cincinnati to Oroville (California) | 1,966.73 mi (3,165.15 km) |
| Cincinnati to Oshkosh (Wisconsin) | 396.98 mi (638.88 km) |
| Cincinnati to Oskaloosa (Iowa) | 453.96 mi (730.57 km) |
