| Biddeford to Castrovillari | 4,267.61 mi (6,868.05 km) |
| Biddeford to Catania | 4,310.28 mi (6,936.72 km) |
| Biddeford to Catanzaro | 4,321.41 mi (6,954.64 km) |
| Biddeford to Cattolica | 3,962.12 mi (6,376.41 km) |
| Biddeford to Cava de' Tirreni | 4,167.89 mi (6,707.58 km) |
| Biddeford to Cavallino | 4,334.45 mi (6,975.63 km) |
| Biddeford to Cavarzere | 3,893.29 mi (6,265.64 km) |
| Biddeford to Cave | 4,048.91 mi (6,516.09 km) |
| Biddeford to Cavriago | 3,842.71 mi (6,184.24 km) |
| Biddeford to Cavriglia | 3,924.62 mi (6,316.07 km) |
| Biddeford to Cazzago San Martino | 3,791.31 mi (6,101.53 km) |
| Biddeford to Ceccano | 4,075.60 mi (6,559.04 km) |
| Biddeford to Cecina | 3,889.94 mi (6,260.26 km) |
| Biddeford to Cefalu | 4,241.10 mi (6,825.40 km) |
| Biddeford to Ceglie Messapico | 4,291.11 mi (6,905.88 km) |
