| Boise to Orangevale (California) | 427.15 mi (687.44 km) |
| Boise to Orchards (Washington) | 341.53 mi (549.63 km) |
| Boise to Orcutt (California) | 643.40 mi (1,035.45 km) |
| Boise to Oregon (Ohio) | 1,661.98 mi (2,674.70 km) |
| Boise to Oregon (Wisconsin) | 1,345.45 mi (2,165.29 km) |
| Boise to Oregon City (Oregon) | 335.83 mi (540.46 km) |
| Boise to Orem (Utah) | 325.92 mi (524.51 km) |
| Boise to Orinda (California) | 502.84 mi (809.23 km) |
| Boise to Orland Park (Illinois) | 1,442.23 mi (2,321.04 km) |
| Boise to Orlando (Florida) | 2,189.40 mi (3,523.50 km) |
| Boise to Ormond Beach (Florida) | 2,166.29 mi (3,486.31 km) |
| Boise to Oro Valley (Arizona) | 823.24 mi (1,324.87 km) |
| Boise to Oroville (California) | 395.18 mi (635.99 km) |
| Boise to Oshkosh (Wisconsin) | 1,373.35 mi (2,210.19 km) |
| Boise to Oskaloosa (Iowa) | 1,209.12 mi (1,945.90 km) |
