| Port Huron to Busto Arsizio | 4,255.90 mi (6,849.21 km) |
| Port Huron to Busto Garolfo | 4,259.77 mi (6,855.43 km) |
| Port Huron to Cabras | 4,467.05 mi (7,189.02 km) |
| Port Huron to Cadelbosco di Sopra | 4,359.13 mi (7,015.34 km) |
| Port Huron to Cadoneghe | 4,385.07 mi (7,057.08 km) |
| Port Huron to Cagli | 4,490.71 mi (7,227.09 km) |
| Port Huron to Cagliari | 4,520.68 mi (7,275.33 km) |
| Port Huron to Cairo Montenotte | 4,278.84 mi (6,886.13 km) |
| Port Huron to Caivano | 4,666.75 mi (7,510.40 km) |
| Port Huron to Calcinaia | 4,402.97 mi (7,085.90 km) |
| Port Huron to Calcinato | 4,324.44 mi (6,959.52 km) |
| Port Huron to Calderara di Reno | 4,393.87 mi (7,071.25 km) |
| Port Huron to Caldogno | 4,361.73 mi (7,019.53 km) |
| Port Huron to Calenzano | 4,417.94 mi (7,109.98 km) |
| Port Huron to Calolziocorte | 4,271.96 mi (6,875.06 km) |
