| Echelon to Cibolo (Texas) | 1,491.53 mi (2,400.38 km) |
| Echelon to Cicero (Illinois) | 680.54 mi (1,095.22 km) |
| Echelon to Cimarron Hills (Colorado) | 1,581.12 mi (2,544.56 km) |
| Echelon to Cincinnati (Ohio) | 509.17 mi (819.44 km) |
| Echelon to Cinco Ranch (Texas) | 1,364.61 mi (2,196.13 km) |
| Echelon to Circleville (Ohio) | 422.00 mi (679.14 km) |
| Echelon to Citrus (California) | 2,377.26 mi (3,825.84 km) |
| Echelon to Citrus Heights (California) | 2,449.32 mi (3,941.80 km) |
| Echelon to Citrus Park (Florida) | 921.05 mi (1,482.28 km) |
| Echelon to Claiborne (Louisiana) | 1,081.45 mi (1,740.42 km) |
| Echelon to Claremont (California) | 2,367.81 mi (3,810.62 km) |
| Echelon to Claremont (New Hampshire) | 279.92 mi (450.49 km) |
| Echelon to Claremore (Oklahoma) | 1,144.62 mi (1,842.08 km) |
| Echelon to Clarksburg (Maryland) | 128.41 mi (206.66 km) |
| Echelon to Clarksburg (West Virginia) | 286.36 mi (460.85 km) |
