| Westmont to Castle Pines (Colorado) | 834.89 mi (1,343.62 km) |
| Westmont to Castle Rock (Colorado) | 833.42 mi (1,341.26 km) |
| Westmont to Castro Valley (California) | 334.80 mi (538.80 km) |
| Westmont to Catalina Foothills (Arizona) | 443.78 mi (714.20 km) |
| Westmont to Cataño (Puerto Rico) | 3,367.92 mi (5,420.14 km) |
| Westmont to Cathedral City (California) | 105.65 mi (170.02 km) |
| Westmont to Catonsville (Maryland) | 2,313.82 mi (3,723.73 km) |
| Westmont to Cave Spring (Virginia) | 2,149.14 mi (3,458.70 km) |
| Westmont to Cayce (South Carolina) | 2,123.57 mi (3,417.56 km) |
| Westmont to Cayey (Puerto Rico) | 3,377.80 mi (5,436.05 km) |
| Westmont to Cedar City (Utah) | 389.65 mi (627.09 km) |
| Westmont to Cedar Falls (Iowa) | 1,515.23 mi (2,438.53 km) |
| Westmont to Cedar Hill (Texas) | 1,234.41 mi (1,986.60 km) |
| Westmont to Cedar Lake (Indiana) | 1,753.93 mi (2,822.67 km) |
| Westmont to Cedar Mill (Oregon) | 835.59 mi (1,344.75 km) |
