| Port Huron to Cabestany | 4,120.49 mi (6,631.29 km) |
| Port Huron to Cabries | 4,195.65 mi (6,752.25 km) |
| Port Huron to Cachan | 3,880.47 mi (6,245.01 km) |
| Port Huron to Caen | 3,759.63 mi (6,050.54 km) |
| Port Huron to Cagnes-sur-Mer | 4,261.09 mi (6,857.57 km) |
| Port Huron to Cahors | 3,992.56 mi (6,425.40 km) |
| Port Huron to Calais | 3,791.98 mi (6,102.61 km) |
| Port Huron to Caluire-et-Cuire | 4,086.46 mi (6,576.52 km) |
| Port Huron to Cambrai | 3,870.37 mi (6,228.77 km) |
| Port Huron to Canet-en-Roussillon | 4,122.33 mi (6,634.25 km) |
| Port Huron to Cannes | 4,259.78 mi (6,855.45 km) |
| Port Huron to Canteleu | 3,807.32 mi (6,127.28 km) |
| Port Huron to Capbreton | 3,897.39 mi (6,272.24 km) |
| Port Huron to Carcassonne | 4,075.67 mi (6,559.15 km) |
| Port Huron to Carmaux | 4,037.17 mi (6,497.20 km) |
