| Echelon to Carlsbad (California) | 2,371.96 mi (3,817.30 km) |
| Echelon to Carlsbad (New Mexico) | 1,702.39 mi (2,739.74 km) |
| Echelon to Carmel (Indiana) | 590.65 mi (950.55 km) |
| Echelon to Carmichael (California) | 2,452.56 mi (3,947.02 km) |
| Echelon to Carney (Maryland) | 86.88 mi (139.82 km) |
| Echelon to Carnot-Moon (Pennsylvania) | 279.48 mi (449.77 km) |
| Echelon to Carol Stream (Illinois) | 700.14 mi (1,126.76 km) |
| Echelon to Carolina (Puerto Rico) | 1,576.16 mi (2,536.59 km) |
| Echelon to Carolina Forest (South Carolina) | 472.75 mi (760.81 km) |
| Echelon to Carpentersville (Illinois) | 710.16 mi (1,142.88 km) |
| Echelon to Carpinteria (California) | 2,455.68 mi (3,952.04 km) |
| Echelon to Carrboro (North Carolina) | 350.96 mi (564.82 km) |
| Echelon to Carroll (Iowa) | 1,045.59 mi (1,682.71 km) |
| Echelon to Carrollton (Georgia) | 706.07 mi (1,136.31 km) |
| Echelon to Carrollton (Texas) | 1,302.58 mi (2,096.29 km) |
