| Box Elder to Caguas (Puerto Rico) | 2,788.04 mi (4,486.91 km) |
| Box Elder to Cahokia (Illinois) | 770.01 mi (1,239.21 km) |
| Box Elder to Calabasas (California) | 1,079.81 mi (1,737.79 km) |
| Box Elder to Caldwell (Idaho) | 676.21 mi (1,088.25 km) |
| Box Elder to Caledonia (Wisconsin) | 766.91 mi (1,234.22 km) |
| Box Elder to Calera (Alabama) | 1,159.74 mi (1,866.43 km) |
| Box Elder to Calexico (California) | 1,034.46 mi (1,664.81 km) |
| Box Elder to Calhoun (Georgia) | 1,171.77 mi (1,885.78 km) |
| Box Elder to California (Maryland) | 1,432.18 mi (2,304.87 km) |
| Box Elder to California City (California) | 998.43 mi (1,606.82 km) |
| Box Elder to Callaway (Florida) | 1,359.95 mi (2,188.63 km) |
| Box Elder to Calumet City (Illinois) | 803.99 mi (1,293.89 km) |
| Box Elder to Calverton (Maryland) | 1,388.49 mi (2,234.56 km) |
| Box Elder to Camano (Washington) | 966.83 mi (1,555.97 km) |
| Box Elder to Camarillo (California) | 1,090.68 mi (1,755.28 km) |
