| Echt to Carson (California) | 5,659.82 mi (9,108.60 km) |
| Echt to Carson City (Nevada) | 5,390.28 mi (8,674.81 km) |
| Echt to Carteret (New Jersey) | 3,729.00 mi (6,001.24 km) |
| Echt to Cartersville (Georgia) | 4,455.11 mi (7,169.80 km) |
| Echt to Carthage (Missouri) | 4,669.71 mi (7,515.18 km) |
| Echt to Cary (Illinois) | 4,194.00 mi (6,749.60 km) |
| Echt to Cary (North Carolina) | 4,136.12 mi (6,656.44 km) |
| Echt to Casa de Oro-Mount Helix (California) | 5,683.48 mi (9,146.67 km) |
| Echt to Casa Grande (Arizona) | 5,509.26 mi (8,866.30 km) |
| Echt to Casas Adobes (Arizona) | 5,516.60 mi (8,878.12 km) |
| Echt to Cascades (Virginia) | 3,925.26 mi (6,317.10 km) |
| Echt to Casper (Wyoming) | 4,780.93 mi (7,694.16 km) |
| Echt to Casselberry (Florida) | 4,588.65 mi (7,384.72 km) |
| Echt to Castaic (California) | 5,633.16 mi (9,065.69 km) |
| Echt to Castle Pines (Colorado) | 4,917.06 mi (7,913.25 km) |
