| Westmont to Cadillac (Michigan) | 1,886.08 mi (3,035.35 km) |
| Westmont to Caguas (Puerto Rico) | 3,380.91 mi (5,441.05 km) |
| Westmont to Cahokia (Illinois) | 1,592.58 mi (2,563.01 km) |
| Westmont to Calabasas (California) | 25.00 mi (40.23 km) |
| Westmont to Caldwell (Idaho) | 676.22 mi (1,088.27 km) |
| Westmont to Caledonia (Wisconsin) | 1,746.53 mi (2,810.77 km) |
| Westmont to Calera (Alabama) | 1,811.17 mi (2,914.79 km) |
| Westmont to Calexico (California) | 183.88 mi (295.93 km) |
| Westmont to Calhoun (Georgia) | 1,897.85 mi (3,054.30 km) |
| Westmont to California (Maryland) | 2,332.79 mi (3,754.27 km) |
| Westmont to California City (California) | 87.51 mi (140.83 km) |
| Westmont to Callaway (Florida) | 1,927.62 mi (3,102.20 km) |
| Westmont to Calumet City (Illinois) | 1,750.32 mi (2,816.86 km) |
| Westmont to Calverton (Maryland) | 2,303.83 mi (3,707.66 km) |
| Westmont to Camano (Washington) | 1,007.50 mi (1,621.41 km) |
