| Upminster to Cloverly (Maryland) | 3,668.49 mi (5,903.86 km) |
| Upminster to Clovis (California) | 5,335.73 mi (8,587.02 km) |
| Upminster to Clovis (New Mexico) | 4,913.45 mi (7,907.44 km) |
| Upminster to Clute (Texas) | 4,901.71 mi (7,888.54 km) |
| Upminster to Coachella (California) | 5,403.17 mi (8,695.56 km) |
| Upminster to Coalinga (California) | 5,394.89 mi (8,682.24 km) |
| Upminster to Coamo (Puerto Rico) | 4,247.16 mi (6,835.15 km) |
| Upminster to Coatesville (Pennsylvania) | 3,581.30 mi (5,763.55 km) |
| Upminster to Cockeysville (Maryland) | 3,636.65 mi (5,852.63 km) |
| Upminster to Cocoa (Florida) | 4,336.40 mi (6,978.77 km) |
| Upminster to Cocoa Beach (Florida) | 4,332.98 mi (6,973.26 km) |
| Upminster to Coconut Creek (Florida) | 4,417.40 mi (7,109.11 km) |
| Upminster to Coeur d'Alene (Idaho) | 4,636.36 mi (7,461.50 km) |
| Upminster to Cohoes (New York) | 3,375.42 mi (5,432.21 km) |
| Upminster to Cold Springs (Nevada) | 5,179.83 mi (8,336.13 km) |
