| Biddeford to Carson (California) | 2,625.79 mi (4,225.81 km) |
| Biddeford to Carson City (Nevada) | 2,538.32 mi (4,085.03 km) |
| Biddeford to Carteret (New Jersey) | 277.88 mi (447.20 km) |
| Biddeford to Cartersville (Georgia) | 1,002.42 mi (1,613.24 km) |
| Biddeford to Carthage (Missouri) | 1,325.79 mi (2,133.65 km) |
| Biddeford to Cary (Illinois) | 904.13 mi (1,455.06 km) |
| Biddeford to Cary (North Carolina) | 692.28 mi (1,114.12 km) |
| Biddeford to Casa de Oro-Mount Helix (California) | 2,598.05 mi (4,181.16 km) |
| Biddeford to Casa Grande (Arizona) | 2,332.23 mi (3,753.36 km) |
| Biddeford to Casas Adobes (Arizona) | 2,314.69 mi (3,725.14 km) |
| Biddeford to Cascades (Virginia) | 472.04 mi (759.68 km) |
| Biddeford to Casper (Wyoming) | 1,794.40 mi (2,887.81 km) |
| Biddeford to Casselberry (Florida) | 1,187.12 mi (1,910.49 km) |
| Biddeford to Castaic (California) | 2,623.16 mi (4,221.57 km) |
| Biddeford to Castle Pines (Colorado) | 1,790.42 mi (2,881.41 km) |
