| The Woodlands to Orangeburg (South Carolina) | 888.92 mi (1,430.58 km) |
| The Woodlands to Orangevale (California) | 1,572.01 mi (2,529.90 km) |
| The Woodlands to Orchards (Washington) | 1,806.68 mi (2,907.57 km) |
| The Woodlands to Orcutt (California) | 1,482.83 mi (2,386.38 km) |
| The Woodlands to Oregon (Ohio) | 1,039.96 mi (1,673.66 km) |
| The Woodlands to Oregon (Wisconsin) | 943.65 mi (1,518.66 km) |
| The Woodlands to Oregon City (Oregon) | 1,798.60 mi (2,894.57 km) |
| The Woodlands to Orem (Utah) | 1,147.35 mi (1,846.49 km) |
| The Woodlands to Orinda (California) | 1,610.41 mi (2,591.70 km) |
| The Woodlands to Orland Park (Illinois) | 897.70 mi (1,444.70 km) |
| The Woodlands to Orlando (Florida) | 861.40 mi (1,386.29 km) |
| The Woodlands to Ormond Beach (Florida) | 866.18 mi (1,393.99 km) |
| The Woodlands to Oro Valley (Arizona) | 925.18 mi (1,488.94 km) |
| The Woodlands to Oroville (California) | 1,604.18 mi (2,581.67 km) |
| The Woodlands to Oshkosh (Wisconsin) | 1,029.73 mi (1,657.19 km) |
