| Duluth to Cehegin | 4,386.78 mi (7,059.85 km) |
| Duluth to Cervello | 4,392.14 mi (7,068.47 km) |
| Duluth to Cervera | 4,352.93 mi (7,005.37 km) |
| Duluth to Ceuti | 4,409.28 mi (7,096.05 km) |
| Duluth to Cheste | 4,371.14 mi (7,034.67 km) |
| Duluth to Chiclana de la Frontera | 4,276.35 mi (6,882.12 km) |
| Duluth to Chipiona | 4,250.35 mi (6,840.28 km) |
| Duluth to Chiva | 4,370.07 mi (7,032.94 km) |
| Duluth to Churriana de la Vega | 4,350.87 mi (7,002.05 km) |
| Duluth to Ciempozuelos | 4,220.87 mi (6,792.84 km) |
| Duluth to Cieza | 4,396.04 mi (7,074.75 km) |
| Duluth to Cisterniga | 4,115.03 mi (6,622.50 km) |
| Duluth to Ciudad de Melilla | 4,464.13 mi (7,184.32 km) |
| Duluth to Ciudad Real | 4,259.32 mi (6,854.72 km) |
| Duluth to Ciudad-Rodrigo | 4,080.98 mi (6,567.70 km) |
