| Biddeford to Cehegin | 3,508.34 mi (5,646.13 km) |
| Biddeford to Cervello | 3,573.83 mi (5,751.53 km) |
| Biddeford to Cervera | 3,533.68 mi (5,686.90 km) |
| Biddeford to Ceuti | 3,533.77 mi (5,687.06 km) |
| Biddeford to Cheste | 3,514.52 mi (5,656.08 km) |
| Biddeford to Chiclana de la Frontera | 3,356.08 mi (5,401.10 km) |
| Biddeford to Chipiona | 3,331.71 mi (5,361.86 km) |
| Biddeford to Chiva | 3,513.14 mi (5,653.86 km) |
| Biddeford to Churriana de la Vega | 3,451.88 mi (5,555.26 km) |
| Biddeford to Ciempozuelos | 3,354.94 mi (5,399.26 km) |
| Biddeford to Cieza | 3,521.40 mi (5,667.14 km) |
| Biddeford to Cisterniga | 3,260.41 mi (5,247.12 km) |
| Biddeford to Ciudad de Melilla | 3,550.54 mi (5,714.05 km) |
| Biddeford to Ciudad Real | 3,378.39 mi (5,437.00 km) |
| Biddeford to Ciudad-Rodrigo | 3,203.82 mi (5,156.06 km) |
