| Biddeford to Cocentaina | 3,550.50 mi (5,713.98 km) |
| Biddeford to Coin | 3,415.34 mi (5,496.47 km) |
| Biddeford to Colindres | 3,265.33 mi (5,255.04 km) |
| Biddeford to Collado-Villalba | 3,321.84 mi (5,345.98 km) |
| Biddeford to Colmenar Viejo | 3,332.41 mi (5,362.99 km) |
| Biddeford to Colmenarejo | 3,323.68 mi (5,348.94 km) |
| Biddeford to Conil de la Frontera | 3,364.40 mi (5,414.48 km) |
| Biddeford to Consuegra | 3,377.66 mi (5,435.83 km) |
| Biddeford to Corbera de Llobregat | 3,571.90 mi (5,748.42 km) |
| Biddeford to Cordoba | 3,373.15 mi (5,428.55 km) |
| Biddeford to Coria del Rio | 3,331.93 mi (5,362.22 km) |
| Biddeford to Crevillente | 3,549.93 mi (5,713.07 km) |
| Biddeford to Cuarte de Huerva | 3,435.95 mi (5,529.62 km) |
| Biddeford to Cubellas | 3,566.87 mi (5,740.32 km) |
| Biddeford to Cuellar | 3,284.11 mi (5,285.27 km) |
