| Signal Hill to Central Point (Oregon) | 645.80 mi (1,039.31 km) |
| Signal Hill to Centralia (Illinois) | 1,645.48 mi (2,648.15 km) |
| Signal Hill to Centralia (Washington) | 927.37 mi (1,492.46 km) |
| Signal Hill to Centreville (Virginia) | 2,274.92 mi (3,661.13 km) |
| Signal Hill to Ceres (California) | 305.29 mi (491.32 km) |
| Signal Hill to Cerritos (California) | 7.26 mi (11.68 km) |
| Signal Hill to Chalco (Nebraska) | 1,306.35 mi (2,102.36 km) |
| Signal Hill to Chalmette (Louisiana) | 1,670.76 mi (2,688.83 km) |
| Signal Hill to Chambersburg (Pennsylvania) | 2,259.22 mi (3,635.87 km) |
| Signal Hill to Chamblee (Georgia) | 1,934.55 mi (3,113.36 km) |
| Signal Hill to Champaign (Illinois) | 1,698.27 mi (2,733.11 km) |
| Signal Hill to Champlin (Minnesota) | 1,527.76 mi (2,458.69 km) |
| Signal Hill to Chandler (Arizona) | 365.48 mi (588.18 km) |
| Signal Hill to Chanhassen (Minnesota) | 1,511.79 mi (2,432.99 km) |
| Signal Hill to Channahon (Illinois) | 1,709.60 mi (2,751.33 km) |
