| Port Huron to Cervignano del Friuli | 4,425.05 mi (7,121.43 km) |
| Port Huron to Cesa | 4,663.30 mi (7,504.85 km) |
| Port Huron to Cesano Maderno | 4,266.97 mi (6,867.03 km) |
| Port Huron to Cesena | 4,450.34 mi (7,162.13 km) |
| Port Huron to Cesenatico | 4,453.86 mi (7,167.80 km) |
| Port Huron to Cetraro | 4,797.34 mi (7,720.58 km) |
| Port Huron to Cherasco | 4,252.86 mi (6,844.31 km) |
| Port Huron to Chiampo | 4,355.36 mi (7,009.27 km) |
| Port Huron to Chiaravalle | 4,516.09 mi (7,267.94 km) |
| Port Huron to Chiari | 4,300.82 mi (6,921.50 km) |
| Port Huron to Chiavari | 4,325.62 mi (6,961.42 km) |
| Port Huron to Chieri | 4,237.13 mi (6,819.01 km) |
| Port Huron to Chieti | 4,601.88 mi (7,406.01 km) |
| Port Huron to Chioggia | 4,407.98 mi (7,093.95 km) |
| Port Huron to Chiusi | 4,484.24 mi (7,216.69 km) |
