| Efringen-Kirchen to Cloverly (Maryland) | 4,073.42 mi (6,555.53 km) |
| Efringen-Kirchen to Clovis (California) | 5,755.41 mi (9,262.44 km) |
| Efringen-Kirchen to Clovis (New Mexico) | 5,335.91 mi (8,587.32 km) |
| Efringen-Kirchen to Clute (Texas) | 5,313.93 mi (8,551.94 km) |
| Efringen-Kirchen to Coachella (California) | 5,826.03 mi (9,376.09 km) |
| Efringen-Kirchen to Coalinga (California) | 5,814.51 mi (9,357.55 km) |
| Efringen-Kirchen to Coamo (Puerto Rico) | 4,560.78 mi (7,339.86 km) |
| Efringen-Kirchen to Coatesville (Pennsylvania) | 3,986.51 mi (6,415.68 km) |
| Efringen-Kirchen to Cockeysville (Maryland) | 4,041.86 mi (6,504.75 km) |
| Efringen-Kirchen to Cocoa (Florida) | 4,724.08 mi (7,602.68 km) |
| Efringen-Kirchen to Cocoa Beach (Florida) | 4,720.26 mi (7,596.53 km) |
| Efringen-Kirchen to Coconut Creek (Florida) | 4,798.80 mi (7,722.92 km) |
| Efringen-Kirchen to Coeur d'Alene (Idaho) | 5,050.02 mi (8,127.23 km) |
| Efringen-Kirchen to Cohoes (New York) | 3,783.83 mi (6,089.49 km) |
| Efringen-Kirchen to Cold Springs (Nevada) | 5,597.46 mi (9,008.25 km) |
