| Port Huron to Cromer | 3,710.04 mi (5,970.73 km) |
| Port Huron to Crosby | 3,530.52 mi (5,681.82 km) |
| Port Huron to Crowborough | 3,722.58 mi (5,990.91 km) |
| Port Huron to Croxley Green | 3,681.46 mi (5,924.74 km) |
| Port Huron to Croydon | 3,702.63 mi (5,958.81 km) |
| Port Huron to Cudworth | 3,589.30 mi (5,776.42 km) |
| Port Huron to Culcheth | 3,550.92 mi (5,714.65 km) |
| Port Huron to Cullercoats | 3,549.55 mi (5,712.45 km) |
| Port Huron to Cumbernauld | 3,433.32 mi (5,525.40 km) |
| Port Huron to Cumnock | 3,435.12 mi (5,528.30 km) |
| Port Huron to Cupar | 3,459.97 mi (5,568.28 km) |
| Port Huron to Cwmbran | 3,580.87 mi (5,762.86 km) |
| Port Huron to Dagenham | 3,707.40 mi (5,966.48 km) |
| Port Huron to Dalkeith | 3,468.48 mi (5,581.98 km) |
| Port Huron to Darfield | 3,591.68 mi (5,780.25 km) |
