| Boadilla del Monte to Caguas (Puerto Rico) | 3,957.77 mi (6,369.41 km) |
| Boadilla del Monte to Cahokia (Illinois) | 4,403.88 mi (7,087.36 km) |
| Boadilla del Monte to Calabasas (California) | 5,824.00 mi (9,372.82 km) |
| Boadilla del Monte to Caldwell (Idaho) | 5,283.37 mi (8,502.76 km) |
| Boadilla del Monte to Caledonia (Wisconsin) | 4,151.08 mi (6,680.52 km) |
| Boadilla del Monte to Calera (Alabama) | 4,443.91 mi (7,151.78 km) |
| Boadilla del Monte to Calexico (California) | 5,766.44 mi (9,280.19 km) |
| Boadilla del Monte to Calhoun (Georgia) | 4,305.78 mi (6,929.48 km) |
| Boadilla del Monte to California (Maryland) | 3,767.89 mi (6,063.83 km) |
| Boadilla del Monte to California City (California) | 5,741.90 mi (9,240.69 km) |
| Boadilla del Monte to Callaway (Florida) | 4,499.44 mi (7,241.16 km) |
| Boadilla del Monte to Calumet City (Illinois) | 4,176.65 mi (6,721.67 km) |
| Boadilla del Monte to Calverton (Maryland) | 3,766.15 mi (6,061.04 km) |
| Boadilla del Monte to Camano (Washington) | 5,258.36 mi (8,462.52 km) |
| Boadilla del Monte to Camarillo (California) | 5,834.14 mi (9,389.14 km) |
