| Fort Lewis to Orangevale (California) | 584.85 mi (941.23 km) |
| Fort Lewis to Orchards (Washington) | 97.20 mi (156.42 km) |
| Fort Lewis to Orcutt (California) | 852.05 mi (1,371.24 km) |
| Fort Lewis to Oregon (Ohio) | 1,947.84 mi (3,134.74 km) |
| Fort Lewis to Oregon (Wisconsin) | 1,633.35 mi (2,628.63 km) |
| Fort Lewis to Oregon City (Oregon) | 121.17 mi (195.01 km) |
| Fort Lewis to Orem (Utah) | 716.67 mi (1,153.36 km) |
| Fort Lewis to Orinda (California) | 636.98 mi (1,025.12 km) |
| Fort Lewis to Orland Park (Illinois) | 1,740.89 mi (2,801.69 km) |
| Fort Lewis to Orlando (Florida) | 2,552.07 mi (4,107.16 km) |
| Fort Lewis to Ormond Beach (Florida) | 2,525.38 mi (4,064.20 km) |
| Fort Lewis to Oro Valley (Arizona) | 1,183.27 mi (1,904.29 km) |
| Fort Lewis to Oroville (California) | 527.21 mi (848.47 km) |
| Fort Lewis to Oshkosh (Wisconsin) | 1,645.54 mi (2,648.24 km) |
| Fort Lewis to Oskaloosa (Iowa) | 1,525.46 mi (2,454.99 km) |
