| Port Huron to Benavente | 3,725.24 mi (5,995.19 km) |
| Port Huron to Bombarral | 3,698.40 mi (5,951.99 km) |
| Port Huron to Bougado | 3,657.00 mi (5,885.38 km) |
| Port Huron to Braga | 3,656.38 mi (5,884.37 km) |
| Port Huron to Braganca | 3,723.34 mi (5,992.14 km) |
| Port Huron to Cabeceiras de Basto | 3,675.31 mi (5,914.84 km) |
| Port Huron to Cacem | 3,708.21 mi (5,967.78 km) |
| Port Huron to Cadaval | 3,702.16 mi (5,958.04 km) |
| Port Huron to Caldas da Rainha | 3,694.59 mi (5,945.88 km) |
| Port Huron to Calheta | 3,540.57 mi (5,697.99 km) |
| Port Huron to Camara de Lobos | 3,550.97 mi (5,714.73 km) |
| Port Huron to Canico | 3,559.25 mi (5,728.06 km) |
| Port Huron to Cantanhede | 3,688.14 mi (5,935.48 km) |
| Port Huron to Carregal do Sal | 3,712.57 mi (5,974.81 km) |
| Port Huron to Cartaxo | 3,719.75 mi (5,986.36 km) |
