| Signal Hill to Cullman (Alabama) | 1,787.72 mi (2,877.06 km) |
| Signal Hill to Culpeper (Virginia) | 2,246.58 mi (3,615.53 km) |
| Signal Hill to Culver City (California) | 19.19 mi (30.89 km) |
| Signal Hill to Cumberland (Maryland) | 2,201.43 mi (3,542.87 km) |
| Signal Hill to Cupertino (California) | 326.23 mi (525.01 km) |
| Signal Hill to Cutler Bay (Florida) | 2,326.94 mi (3,744.85 km) |
| Signal Hill to Cutlerville (Michigan) | 1,855.13 mi (2,985.54 km) |
| Signal Hill to Cuyahoga Falls (Ohio) | 2,056.32 mi (3,309.33 km) |
| Signal Hill to Cypress (California) | 7.50 mi (12.07 km) |
| Signal Hill to Cypress Gardens (Florida) | 2,187.99 mi (3,521.23 km) |
| Signal Hill to Cypress Lake (Florida) | 2,211.75 mi (3,559.46 km) |
| Signal Hill to D'Iberville (Mississippi) | 1,721.88 mi (2,771.11 km) |
| Signal Hill to Dakota Ridge (Colorado) | 825.03 mi (1,327.75 km) |
| Signal Hill to Dale City (Virginia) | 2,280.90 mi (3,670.75 km) |
| Signal Hill to Dallas (Georgia) | 1,903.59 mi (3,063.54 km) |
