| Box Elder to Odessa (Texas) | 846.08 mi (1,361.64 km) |
| Box Elder to Ogden (Utah) | 493.13 mi (793.61 km) |
| Box Elder to Oildale (California) | 1,034.96 mi (1,665.60 km) |
| Box Elder to Ojus (Florida) | 1,792.39 mi (2,884.57 km) |
| Box Elder to Okemos (Michigan) | 940.02 mi (1,512.82 km) |
| Box Elder to Oklahoma City (Oklahoma) | 666.02 mi (1,071.86 km) |
| Box Elder to Okmulgee (Oklahoma) | 696.22 mi (1,120.45 km) |
| Box Elder to Olathe (Kansas) | 559.24 mi (900.00 km) |
| Box Elder to Old Jamestown (Missouri) | 754.81 mi (1,214.76 km) |
| Box Elder to Oldsmar (Florida) | 1,582.30 mi (2,546.47 km) |
| Box Elder to Olean (New York) | 1,246.78 mi (2,006.51 km) |
| Box Elder to Olive Branch (Mississippi) | 944.99 mi (1,520.81 km) |
| Box Elder to Olivehurst (California) | 1,013.28 mi (1,630.71 km) |
| Box Elder to Olney (Maryland) | 1,380.05 mi (2,220.97 km) |
| Box Elder to Olympia (Washington) | 976.58 mi (1,571.65 km) |
