| Echelon to Conyers (Georgia) | 655.72 mi (1,055.29 km) |
| Echelon to Cookeville (Tennessee) | 626.47 mi (1,008.21 km) |
| Echelon to Coolidge (Arizona) | 2,071.82 mi (3,334.27 km) |
| Echelon to Coon Rapids (Minnesota) | 999.94 mi (1,609.25 km) |
| Echelon to Cooper City (Florida) | 1,001.22 mi (1,611.30 km) |
| Echelon to Coos Bay (Oregon) | 2,518.09 mi (4,052.48 km) |
| Echelon to Copiague (New York) | 101.87 mi (163.94 km) |
| Echelon to Coppell (Texas) | 1,308.02 mi (2,105.06 km) |
| Echelon to Copperas Cove (Texas) | 1,417.98 mi (2,282.01 km) |
| Echelon to Coral Gables (Florida) | 1,023.69 mi (1,647.47 km) |
| Echelon to Coral Springs (Florida) | 985.91 mi (1,586.66 km) |
| Echelon to Coral Terrace (Florida) | 1,021.43 mi (1,643.83 km) |
| Echelon to Coralville (Iowa) | 876.59 mi (1,410.73 km) |
| Echelon to Coram (New York) | 126.75 mi (203.99 km) |
| Echelon to Corcoran (California) | 2,416.35 mi (3,888.74 km) |
