| Box Elder to Cadiz | 4,818.80 mi (7,755.10 km) |
| Box Elder to Calafell | 4,921.16 mi (7,919.84 km) |
| Box Elder to Calahorra | 4,734.66 mi (7,619.70 km) |
| Box Elder to Calasparra | 4,931.25 mi (7,936.07 km) |
| Box Elder to Calatayud | 4,790.69 mi (7,709.87 km) |
| Box Elder to Caldas de Montbuy | 4,923.53 mi (7,923.66 km) |
| Box Elder to Caldas de Reyes | 4,457.76 mi (7,174.06 km) |
| Box Elder to Calella | 4,943.01 mi (7,955.00 km) |
| Box Elder to Callosa de Segura | 4,969.26 mi (7,997.25 km) |
| Box Elder to Calpe | 4,981.69 mi (8,017.26 km) |
| Box Elder to Calvia | 5,034.42 mi (8,102.12 km) |
| Box Elder to Camas | 4,791.01 mi (7,710.39 km) |
| Box Elder to Cambados | 4,455.55 mi (7,170.52 km) |
| Box Elder to Cambre | 4,441.41 mi (7,147.76 km) |
| Box Elder to Cambrils | 4,907.79 mi (7,898.33 km) |
