| Port Huron to Cuenca | 3,991.70 mi (6,424.03 km) |
| Port Huron to Cuevas del Almanzora | 4,106.77 mi (6,609.20 km) |
| Port Huron to Cullera | 4,110.44 mi (6,615.11 km) |
| Port Huron to Culleredo | 3,602.15 mi (5,797.10 km) |
| Port Huron to Cunit | 4,118.61 mi (6,628.27 km) |
| Port Huron to Daganzo de Arriba | 3,915.72 mi (6,301.75 km) |
| Port Huron to Daimiel | 3,960.62 mi (6,374.00 km) |
| Port Huron to Don Benito | 3,862.06 mi (6,215.38 km) |
| Port Huron to Donostia | 3,884.62 mi (6,251.68 km) |
| Port Huron to Dos Hermanas | 3,919.09 mi (6,307.16 km) |
| Port Huron to Durango | 3,861.36 mi (6,214.26 km) |
| Port Huron to Ecija | 3,949.16 mi (6,355.55 km) |
| Port Huron to Ejea de los Caballeros | 3,963.06 mi (6,377.93 km) |
| Port Huron to El Alamo | 3,902.46 mi (6,280.41 km) |
| Port Huron to El Arahal | 3,937.10 mi (6,336.16 km) |
