| Unterwellenborn to Caguas (Puerto Rico) | 4,707.41 mi (7,575.84 km) |
| Unterwellenborn to Cahokia (Illinois) | 4,665.53 mi (7,508.45 km) |
| Unterwellenborn to Calabasas (California) | 5,837.95 mi (9,395.27 km) |
| Unterwellenborn to Caldwell (Idaho) | 5,215.16 mi (8,392.99 km) |
| Unterwellenborn to Caledonia (Wisconsin) | 4,369.97 mi (7,032.79 km) |
| Unterwellenborn to Calera (Alabama) | 4,815.40 mi (7,749.64 km) |
| Unterwellenborn to Calexico (California) | 5,833.75 mi (9,388.51 km) |
| Unterwellenborn to Calhoun (Georgia) | 4,675.79 mi (7,524.96 km) |
| Unterwellenborn to California (Maryland) | 4,158.36 mi (6,692.24 km) |
| Unterwellenborn to California City (California) | 5,754.30 mi (9,260.65 km) |
| Unterwellenborn to Callaway (Florida) | 4,922.80 mi (7,922.48 km) |
| Unterwellenborn to Calumet City (Illinois) | 4,416.90 mi (7,108.31 km) |
| Unterwellenborn to Calverton (Maryland) | 4,140.40 mi (6,663.34 km) |
| Unterwellenborn to Camano (Washington) | 5,081.39 mi (8,177.71 km) |
| Unterwellenborn to Camarillo (California) | 5,842.87 mi (9,403.19 km) |
