| Port Huron to Cosham | 3,681.08 mi (5,924.13 km) |
| Port Huron to Costessey | 3,714.88 mi (5,978.53 km) |
| Port Huron to Cottingham | 3,621.19 mi (5,827.74 km) |
| Port Huron to Coulsdon | 3,703.06 mi (5,959.51 km) |
| Port Huron to Coventry | 3,618.30 mi (5,823.09 km) |
| Port Huron to Cowdenbeath | 3,452.75 mi (5,556.66 km) |
| Port Huron to Cowes | 3,674.31 mi (5,913.24 km) |
| Port Huron to Cowley | 3,683.59 mi (5,928.16 km) |
| Port Huron to Cowley | 3,649.07 mi (5,872.61 km) |
| Port Huron to Cramlington | 3,542.70 mi (5,701.43 km) |
| Port Huron to Cranleigh | 3,695.36 mi (5,947.10 km) |
| Port Huron to Crawley | 3,707.54 mi (5,966.71 km) |
| Port Huron to Crayford | 3,711.63 mi (5,973.30 km) |
| Port Huron to Crewe | 3,563.54 mi (5,734.96 km) |
| Port Huron to Crigglestone | 3,583.45 mi (5,767.01 km) |
