| Port Huron to Cullman (Alabama) | 652.89 mi (1,050.73 km) |
| Port Huron to Culpeper (Virginia) | 388.70 mi (625.56 km) |
| Port Huron to Culver City (California) | 2,023.44 mi (3,256.42 km) |
| Port Huron to Cumberland (Maryland) | 298.99 mi (481.18 km) |
| Port Huron to Cupertino (California) | 2,107.99 mi (3,392.48 km) |
| Port Huron to Cutler Bay (Florida) | 1,208.48 mi (1,944.86 km) |
| Port Huron to Cutlerville (Michigan) | 163.97 mi (263.88 km) |
| Port Huron to Cuyahoga Falls (Ohio) | 134.14 mi (215.88 km) |
| Port Huron to Cypress (California) | 2,011.71 mi (3,237.53 km) |
| Port Huron to Cypress Gardens (Florida) | 1,035.77 mi (1,666.91 km) |
| Port Huron to Cypress Lake (Florida) | 1,136.50 mi (1,829.02 km) |
| Port Huron to D'Iberville (Mississippi) | 934.84 mi (1,504.47 km) |
| Port Huron to Dakota Ridge (Colorado) | 1,196.88 mi (1,926.20 km) |
| Port Huron to Dale City (Virginia) | 400.62 mi (644.74 km) |
| Port Huron to Dallas (Georgia) | 639.73 mi (1,029.55 km) |
