| Biddeford to Castelfidardo | 4,014.86 mi (6,461.29 km) |
| Biddeford to Castelfiorentino | 3,899.44 mi (6,275.55 km) |
| Biddeford to Castelfranco di Sopra | 3,924.07 mi (6,315.17 km) |
| Biddeford to Castelfranco di Sotto | 3,886.60 mi (6,254.88 km) |
| Biddeford to Castelfranco Emilia | 3,868.41 mi (6,225.60 km) |
| Biddeford to Castelfranco Veneto | 3,868.76 mi (6,226.17 km) |
| Biddeford to Castellabate | 4,195.12 mi (6,751.39 km) |
| Biddeford to Castellammare del Golfo | 4,190.36 mi (6,743.74 km) |
| Biddeford to Castellammare di Stabia | 4,158.51 mi (6,692.48 km) |
| Biddeford to Castellamonte | 3,699.34 mi (5,953.51 km) |
| Biddeford to Castellana Grotte | 4,267.60 mi (6,868.03 km) |
| Biddeford to Castellaneta | 4,267.35 mi (6,867.64 km) |
| Biddeford to Castellanza | 3,742.39 mi (6,022.80 km) |
| Biddeford to Castellarano | 3,857.95 mi (6,208.78 km) |
| Biddeford to Castelleone | 3,789.64 mi (6,098.84 km) |
