| Port Huron to Cadillac (Michigan) | 172.76 mi (278.03 km) |
| Port Huron to Caguas (Puerto Rico) | 1,960.39 mi (3,154.95 km) |
| Port Huron to Cahokia (Illinois) | 506.76 mi (815.56 km) |
| Port Huron to Calabasas (California) | 2,032.80 mi (3,271.48 km) |
| Port Huron to Caldwell (Idaho) | 1,708.71 mi (2,749.90 km) |
| Port Huron to Caledonia (Wisconsin) | 275.49 mi (443.37 km) |
| Port Huron to Calera (Alabama) | 719.93 mi (1,158.61 km) |
| Port Huron to Calexico (California) | 1,923.74 mi (3,095.96 km) |
| Port Huron to Calhoun (Georgia) | 601.87 mi (968.61 km) |
| Port Huron to California (Maryland) | 449.11 mi (722.77 km) |
| Port Huron to California City (California) | 1,960.03 mi (3,154.36 km) |
| Port Huron to Callaway (Florida) | 904.18 mi (1,455.14 km) |
| Port Huron to Calumet City (Illinois) | 277.77 mi (447.02 km) |
| Port Huron to Calverton (Maryland) | 394.07 mi (634.20 km) |
| Port Huron to Camano (Washington) | 1,946.01 mi (3,131.80 km) |
