| Biddeford to Carmona | 3,345.94 mi (5,384.77 km) |
| Biddeford to Cartagena | 3,563.90 mi (5,735.54 km) |
| Biddeford to Cartama | 3,419.59 mi (5,503.29 km) |
| Biddeford to Cartaya | 3,278.78 mi (5,276.69 km) |
| Biddeford to Caspe | 3,487.72 mi (5,612.94 km) |
| Biddeford to Cassa de la Selva | 3,599.38 mi (5,792.63 km) |
| Biddeford to Castalla | 3,544.67 mi (5,704.59 km) |
| Biddeford to Castellbisbal | 3,572.27 mi (5,749.01 km) |
| Biddeford to Castelldefels | 3,578.45 mi (5,758.95 km) |
| Biddeford to Castello de Ampurias | 3,596.43 mi (5,787.89 km) |
| Biddeford to Castellon de la Plana | 3,528.31 mi (5,678.26 km) |
| Biddeford to Castilleja de la Cuesta | 3,328.62 mi (5,356.90 km) |
| Biddeford to Catarroja | 3,530.18 mi (5,681.28 km) |
| Biddeford to Catral | 3,553.15 mi (5,718.24 km) |
| Biddeford to Caudete | 3,526.09 mi (5,674.69 km) |
