| Boise to Odessa (Texas) | 1,106.68 mi (1,781.02 km) |
| Boise to Ogden (Utah) | 272.25 mi (438.14 km) |
| Boise to Oildale (California) | 583.87 mi (939.64 km) |
| Boise to Ojus (Florida) | 2,355.55 mi (3,790.89 km) |
| Boise to Okemos (Michigan) | 1,595.13 mi (2,567.11 km) |
| Boise to Oklahoma City (Oklahoma) | 1,141.00 mi (1,836.26 km) |
| Boise to Okmulgee (Oklahoma) | 1,205.35 mi (1,939.83 km) |
| Boise to Olathe (Kansas) | 1,155.41 mi (1,859.46 km) |
| Boise to Old Jamestown (Missouri) | 1,381.83 mi (2,223.84 km) |
| Boise to Oldsmar (Florida) | 2,144.27 mi (3,450.87 km) |
| Boise to Olean (New York) | 1,901.26 mi (3,059.78 km) |
| Boise to Olive Branch (Mississippi) | 1,523.75 mi (2,452.24 km) |
| Boise to Olivehurst (California) | 416.83 mi (670.83 km) |
| Boise to Olney (Maryland) | 2,034.38 mi (3,274.01 km) |
| Boise to Olympia (Washington) | 401.49 mi (646.13 km) |
