| Gummersbach to Cologno al Serio | 389.07 mi (626.14 km) |
| Gummersbach to Cologno Monzese | 388.37 mi (625.01 km) |
| Gummersbach to Colorno | 441.05 mi (709.80 km) |
| Gummersbach to Comacchio | 486.87 mi (783.54 km) |
| Gummersbach to Comiso | 1,032.79 mi (1,662.12 km) |
| Gummersbach to Como | 367.52 mi (591.46 km) |
| Gummersbach to Concordia Sagittaria | 436.96 mi (703.21 km) |
| Gummersbach to Concorezzo | 384.77 mi (619.23 km) |
| Gummersbach to Conegliano | 416.24 mi (669.88 km) |
| Gummersbach to Conselice | 491.70 mi (791.32 km) |
| Gummersbach to Conselve | 446.92 mi (719.25 km) |
| Gummersbach to Conversano | 831.46 mi (1,338.11 km) |
| Gummersbach to Copertino | 897.92 mi (1,445.07 km) |
| Gummersbach to Copparo | 467.29 mi (752.02 km) |
| Gummersbach to Corato | 802.12 mi (1,290.88 km) |
