| Port Huron to Caltagirone | 4,836.34 mi (7,783.34 km) |
| Port Huron to Caltanissetta | 4,806.16 mi (7,734.76 km) |
| Port Huron to Calvisano | 4,325.98 mi (6,962.00 km) |
| Port Huron to Calvizzano | 4,664.09 mi (7,506.13 km) |
| Port Huron to Camaiore | 4,380.10 mi (7,049.10 km) |
| Port Huron to Cameri | 4,252.07 mi (6,843.05 km) |
| Port Huron to Camisano Vicentino | 4,373.84 mi (7,039.01 km) |
| Port Huron to Campagna | 4,711.69 mi (7,582.73 km) |
| Port Huron to Campagnano di Roma | 4,538.34 mi (7,303.75 km) |
| Port Huron to Campi Bisenzio | 4,418.60 mi (7,111.04 km) |
| Port Huron to Campi Salentina | 4,841.81 mi (7,792.13 km) |
| Port Huron to Campiglia Marittima | 4,427.75 mi (7,125.78 km) |
| Port Huron to Campobasso | 4,655.40 mi (7,492.13 km) |
| Port Huron to Campobello di Licata | 4,810.43 mi (7,741.63 km) |
| Port Huron to Campobello di Mazara | 4,743.97 mi (7,634.68 km) |
