| Box Elder to Oakley (California) | 1,054.90 mi (1,697.69 km) |
| Box Elder to Oakton (Virginia) | 1,375.70 mi (2,213.97 km) |
| Box Elder to Oakville (Missouri) | 768.29 mi (1,236.44 km) |
| Box Elder to Oatfield (Oregon) | 959.07 mi (1,543.48 km) |
| Box Elder to Ocala (Florida) | 1,544.45 mi (2,485.55 km) |
| Box Elder to Ocean Acres (New Jersey) | 1,502.87 mi (2,418.64 km) |
| Box Elder to Ocean City (New Jersey) | 1,499.01 mi (2,412.43 km) |
| Box Elder to Ocean Pines (Maryland) | 1,496.02 mi (2,407.61 km) |
| Box Elder to Ocean Pointe (Hawaii) | 3,483.64 mi (5,606.38 km) |
| Box Elder to Ocean Springs (Mississippi) | 1,226.88 mi (1,974.48 km) |
| Box Elder to Oceanside (California) | 1,071.68 mi (1,724.70 km) |
| Box Elder to Oceanside (New York) | 1,513.82 mi (2,436.26 km) |
| Box Elder to Ocoee (Florida) | 1,600.19 mi (2,575.25 km) |
| Box Elder to Oconomowoc (Wisconsin) | 732.17 mi (1,178.31 km) |
| Box Elder to Odenton (Maryland) | 1,400.86 mi (2,254.47 km) |
