| Efringen-Kirchen to Carson (California) | 5,885.03 mi (9,471.03 km) |
| Efringen-Kirchen to Carson City (Nevada) | 5,622.29 mi (9,048.20 km) |
| Efringen-Kirchen to Carteret (New Jersey) | 3,894.64 mi (6,267.82 km) |
| Efringen-Kirchen to Cartersville (Georgia) | 4,623.60 mi (7,440.96 km) |
| Efringen-Kirchen to Carthage (Missouri) | 4,862.90 mi (7,826.08 km) |
| Efringen-Kirchen to Cary (Illinois) | 4,388.08 mi (7,061.93 km) |
| Efringen-Kirchen to Cary (North Carolina) | 4,296.60 mi (6,914.72 km) |
| Efringen-Kirchen to Casa de Oro-Mount Helix (California) | 5,905.79 mi (9,504.45 km) |
| Efringen-Kirchen to Casa Grande (Arizona) | 5,724.07 mi (9,212.00 km) |
| Efringen-Kirchen to Casas Adobes (Arizona) | 5,729.49 mi (9,220.72 km) |
| Efringen-Kirchen to Cascades (Virginia) | 4,092.27 mi (6,585.87 km) |
| Efringen-Kirchen to Casper (Wyoming) | 5,001.45 mi (8,049.06 km) |
| Efringen-Kirchen to Casselberry (Florida) | 4,735.08 mi (7,620.37 km) |
| Efringen-Kirchen to Castaic (California) | 5,859.50 mi (9,429.96 km) |
| Efringen-Kirchen to Castle Pines (Colorado) | 5,130.83 mi (8,257.27 km) |
