| Signal Hill to Carrollwood (Florida) | 2,139.13 mi (3,442.59 km) |
| Signal Hill to Carson (California) | 5.57 mi (8.97 km) |
| Signal Hill to Carson City (Nevada) | 379.78 mi (611.19 km) |
| Signal Hill to Carteret (New Jersey) | 2,437.54 mi (3,922.84 km) |
| Signal Hill to Cartersville (Georgia) | 1,903.20 mi (3,062.90 km) |
| Signal Hill to Carthage (Missouri) | 1,357.76 mi (2,185.11 km) |
| Signal Hill to Cary (Illinois) | 1,718.69 mi (2,765.96 km) |
| Signal Hill to Cary (North Carolina) | 2,221.90 mi (3,575.80 km) |
| Signal Hill to Casa de Oro-Mount Helix (California) | 99.76 mi (160.54 km) |
| Signal Hill to Casa Grande (Arizona) | 374.77 mi (603.13 km) |
| Signal Hill to Casas Adobes (Arizona) | 426.38 mi (686.19 km) |
| Signal Hill to Cascades (Virginia) | 2,276.71 mi (3,664.00 km) |
| Signal Hill to Casper (Wyoming) | 894.11 mi (1,438.93 km) |
| Signal Hill to Casselberry (Florida) | 2,193.87 mi (3,530.70 km) |
| Signal Hill to Castaic (California) | 53.87 mi (86.70 km) |
