| Echelon to Cloverleaf (Texas) | 1,334.27 mi (2,147.30 km) |
| Echelon to Cloverly (Maryland) | 118.52 mi (190.73 km) |
| Echelon to Clovis (California) | 2,405.60 mi (3,871.44 km) |
| Echelon to Clovis (New Mexico) | 1,590.16 mi (2,559.12 km) |
| Echelon to Clute (Texas) | 1,377.12 mi (2,216.26 km) |
| Echelon to Coachella (California) | 2,296.10 mi (3,695.21 km) |
| Echelon to Coalinga (California) | 2,455.00 mi (3,950.94 km) |
| Echelon to Coamo (Puerto Rico) | 1,590.19 mi (2,559.16 km) |
| Echelon to Coatesville (Pennsylvania) | 44.69 mi (71.92 km) |
| Echelon to Cockeysville (Maryland) | 90.53 mi (145.70 km) |
| Echelon to Cocoa (Florida) | 857.76 mi (1,380.43 km) |
| Echelon to Cocoa Beach (Florida) | 857.92 mi (1,380.69 km) |
| Echelon to Coconut Creek (Florida) | 983.92 mi (1,583.46 km) |
| Echelon to Coeur d'Alene (Idaho) | 2,126.80 mi (3,422.75 km) |
| Echelon to Cohoes (New York) | 212.86 mi (342.56 km) |
