| Bostonia to Carmona | 5,872.62 mi (9,451.07 km) |
| Bostonia to Cartagena | 6,063.32 mi (9,757.97 km) |
| Bostonia to Cartama | 5,948.36 mi (9,572.95 km) |
| Bostonia to Cartaya | 5,814.56 mi (9,357.63 km) |
| Bostonia to Caspe | 5,936.48 mi (9,553.84 km) |
| Bostonia to Cassa de la Selva | 6,017.38 mi (9,684.04 km) |
| Bostonia to Castalla | 6,030.96 mi (9,705.89 km) |
| Bostonia to Castellbisbal | 6,003.01 mi (9,660.91 km) |
| Bostonia to Castelldefels | 6,011.99 mi (9,675.37 km) |
| Bostonia to Castello de Ampurias | 6,007.44 mi (9,668.05 km) |
| Bostonia to Castellon de la Plana | 5,993.53 mi (9,645.66 km) |
| Bostonia to Castilleja de la Cuesta | 5,858.18 mi (9,427.82 km) |
| Bostonia to Catarroja | 6,005.13 mi (9,664.33 km) |
| Bostonia to Catral | 6,045.29 mi (9,728.96 km) |
| Bostonia to Caudete | 6,013.15 mi (9,677.23 km) |
