| Port Huron to Celano | 4,588.26 mi (7,384.10 km) |
| Port Huron to Cento | 4,387.87 mi (7,061.59 km) |
| Port Huron to Cepagatti | 4,597.13 mi (7,398.37 km) |
| Port Huron to Ceprano | 4,609.17 mi (7,417.75 km) |
| Port Huron to Cercola | 4,672.36 mi (7,519.43 km) |
| Port Huron to Cerea | 4,366.61 mi (7,027.37 km) |
| Port Huron to Cerese | 4,353.93 mi (7,006.97 km) |
| Port Huron to Cerignola | 4,718.32 mi (7,593.40 km) |
| Port Huron to Cermenate | 4,261.81 mi (6,858.72 km) |
| Port Huron to Cernusco sul Naviglio | 4,278.90 mi (6,886.23 km) |
| Port Huron to Cerreto Guidi | 4,410.47 mi (7,097.96 km) |
| Port Huron to Cerro Maggiore | 4,260.30 mi (6,856.30 km) |
| Port Huron to Certaldo | 4,425.69 mi (7,122.46 km) |
| Port Huron to Cerveteri | 4,532.23 mi (7,293.92 km) |
| Port Huron to Cervia | 4,449.93 mi (7,161.47 km) |
