| Upminster to Carson (California) | 5,463.08 mi (8,791.97 km) |
| Upminster to Carson City (Nevada) | 5,204.09 mi (8,375.18 km) |
| Upminster to Carteret (New Jersey) | 3,490.20 mi (5,616.93 km) |
| Upminster to Cartersville (Georgia) | 4,217.45 mi (6,787.33 km) |
| Upminster to Carthage (Missouri) | 4,443.53 mi (7,151.16 km) |
| Upminster to Cary (Illinois) | 3,968.26 mi (6,386.29 km) |
| Upminster to Cary (North Carolina) | 3,895.98 mi (6,269.97 km) |
| Upminster to Casa de Oro-Mount Helix (California) | 5,482.96 mi (8,823.96 km) |
| Upminster to Casa Grande (Arizona) | 5,300.30 mi (8,530.01 km) |
| Upminster to Casas Adobes (Arizona) | 5,305.74 mi (8,538.76 km) |
| Upminster to Cascades (Virginia) | 3,686.96 mi (5,933.58 km) |
| Upminster to Casper (Wyoming) | 4,578.33 mi (7,368.11 km) |
| Upminster to Casselberry (Florida) | 4,345.64 mi (6,993.63 km) |
| Upminster to Castaic (California) | 5,438.00 mi (8,751.62 km) |
| Upminster to Castle Pines (Colorado) | 4,707.06 mi (7,575.27 km) |
