| Hilliard to Orangevale (California) | 2,019.93 mi (3,250.76 km) |
| Hilliard to Orchards (Washington) | 2,010.84 mi (3,236.14 km) |
| Hilliard to Orcutt (California) | 2,059.55 mi (3,314.53 km) |
| Hilliard to Oregon (Ohio) | 112.65 mi (181.29 km) |
| Hilliard to Oregon (Wisconsin) | 379.21 mi (610.27 km) |
| Hilliard to Oregon City (Oregon) | 2,015.24 mi (3,243.22 km) |
| Hilliard to Orem (Utah) | 1,500.51 mi (2,414.83 km) |
| Hilliard to Orinda (California) | 2,085.02 mi (3,355.52 km) |
| Hilliard to Orland Park (Illinois) | 268.83 mi (432.64 km) |
| Hilliard to Orlando (Florida) | 805.27 mi (1,295.95 km) |
| Hilliard to Ormond Beach (Florida) | 750.92 mi (1,208.49 km) |
| Hilliard to Oro Valley (Arizona) | 1,629.38 mi (2,622.23 km) |
| Hilliard to Oroville (California) | 2,023.96 mi (3,257.25 km) |
| Hilliard to Oshkosh (Wisconsin) | 390.76 mi (628.87 km) |
| Hilliard to Oskaloosa (Iowa) | 504.25 mi (811.51 km) |
