| Bostonia to Cadiz | 5,883.42 mi (9,468.46 km) |
| Bostonia to Calafell | 6,000.08 mi (9,656.20 km) |
| Bostonia to Calahorra | 5,812.88 mi (9,354.92 km) |
| Bostonia to Calasparra | 6,005.24 mi (9,664.50 km) |
| Bostonia to Calatayud | 5,868.33 mi (9,444.17 km) |
| Bostonia to Caldas de Montbuy | 6,002.76 mi (9,660.51 km) |
| Bostonia to Caldas de Reyes | 5,531.89 mi (8,902.71 km) |
| Bostonia to Calella | 6,022.32 mi (9,691.99 km) |
| Bostonia to Callosa de Segura | 6,043.90 mi (9,726.72 km) |
| Bostonia to Calpe | 6,057.78 mi (9,749.06 km) |
| Bostonia to Calvia | 6,112.83 mi (9,837.65 km) |
| Bostonia to Camas | 5,858.11 mi (9,427.71 km) |
| Bostonia to Cambados | 5,529.38 mi (8,898.67 km) |
| Bostonia to Cambre | 5,516.80 mi (8,878.43 km) |
| Bostonia to Cambrils | 5,986.48 mi (9,634.30 km) |
