| Gummersbach to Castle Rock (Colorado) | 4,979.53 mi (8,013.78 km) |
| Gummersbach to Castro Valley (California) | 5,589.32 mi (8,995.15 km) |
| Gummersbach to Catalina Foothills (Arizona) | 5,573.05 mi (8,968.96 km) |
| Gummersbach to Cataño (Puerto Rico) | 4,531.94 mi (7,293.44 km) |
| Gummersbach to Cathedral City (California) | 5,659.94 mi (9,108.79 km) |
| Gummersbach to Catonsville (Maryland) | 3,958.44 mi (6,370.49 km) |
| Gummersbach to Cave Spring (Virginia) | 4,184.10 mi (6,733.65 km) |
| Gummersbach to Cayce (South Carolina) | 4,384.63 mi (7,056.39 km) |
| Gummersbach to Cayey (Puerto Rico) | 4,549.46 mi (7,321.64 km) |
| Gummersbach to Cedar City (Utah) | 5,334.27 mi (8,584.68 km) |
| Gummersbach to Cedar Falls (Iowa) | 4,393.49 mi (7,070.64 km) |
| Gummersbach to Cedar Hill (Texas) | 5,071.09 mi (8,161.13 km) |
| Gummersbach to Cedar Lake (Indiana) | 4,269.34 mi (6,870.84 km) |
| Gummersbach to Cedar Mill (Oregon) | 5,137.78 mi (8,268.46 km) |
| Gummersbach to Cedar Park (Texas) | 5,214.06 mi (8,391.22 km) |
