| Upminster to Castle Rock (Colorado) | 4,711.01 mi (7,581.63 km) |
| Upminster to Castro Valley (California) | 5,356.07 mi (8,619.76 km) |
| Upminster to Catalina Foothills (Arizona) | 5,303.40 mi (8,534.99 km) |
| Upminster to Cataño (Puerto Rico) | 4,218.84 mi (6,789.56 km) |
| Upminster to Cathedral City (California) | 5,405.37 mi (8,699.10 km) |
| Upminster to Catonsville (Maryland) | 3,650.92 mi (5,875.59 km) |
| Upminster to Cave Spring (Virginia) | 3,876.94 mi (6,239.33 km) |
| Upminster to Cayce (South Carolina) | 4,074.72 mi (6,557.63 km) |
| Upminster to Cayey (Puerto Rico) | 4,236.58 mi (6,818.11 km) |
| Upminster to Cedar City (Utah) | 5,079.34 mi (8,174.41 km) |
| Upminster to Cedar Falls (Iowa) | 4,110.30 mi (6,614.89 km) |
| Upminster to Cedar Hill (Texas) | 4,777.49 mi (7,688.62 km) |
| Upminster to Cedar Lake (Indiana) | 3,976.89 mi (6,400.18 km) |
| Upminster to Cedar Mill (Oregon) | 4,922.91 mi (7,922.66 km) |
| Upminster to Cedar Park (Texas) | 4,918.76 mi (7,915.99 km) |
