| Port Huron to Carpentras | 4,158.75 mi (6,692.86 km) |
| Port Huron to Carquefou | 3,773.40 mi (6,072.71 km) |
| Port Huron to Carqueiranne | 4,237.96 mi (6,820.34 km) |
| Port Huron to Carrieres-sous-Poissy | 3,863.61 mi (6,217.88 km) |
| Port Huron to Carrieres-sur-Seine | 3,874.81 mi (6,235.91 km) |
| Port Huron to Carros | 4,258.78 mi (6,853.85 km) |
| Port Huron to Carvin | 3,849.25 mi (6,194.78 km) |
| Port Huron to Castanet-Tolosan | 4,028.15 mi (6,482.68 km) |
| Port Huron to Castelginest | 4,018.99 mi (6,467.93 km) |
| Port Huron to Castelnau-le-Lez | 4,126.05 mi (6,640.23 km) |
| Port Huron to Castelnaudary | 4,054.78 mi (6,525.54 km) |
| Port Huron to Castelsarrasin | 3,992.76 mi (6,425.72 km) |
| Port Huron to Castres | 4,057.25 mi (6,529.51 km) |
| Port Huron to Caudebec-les-Elbeuf | 3,812.18 mi (6,135.11 km) |
| Port Huron to Caudry | 3,878.93 mi (6,242.54 km) |
