| Siegburg to Cosenza | 907.54 mi (1,460.54 km) |
| Siegburg to Cossato | 364.38 mi (586.41 km) |
| Siegburg to Costa Volpino | 368.23 mi (592.61 km) |
| Siegburg to Creazzo | 413.80 mi (665.94 km) |
| Siegburg to Crema | 392.49 mi (631.65 km) |
| Siegburg to Cremona | 412.83 mi (664.39 km) |
| Siegburg to Crevalcore | 458.45 mi (737.81 km) |
| Siegburg to Crispiano | 853.31 mi (1,373.27 km) |
| Siegburg to Crosia | 903.52 mi (1,454.07 km) |
| Siegburg to Crotone | 941.78 mi (1,515.65 km) |
| Siegburg to Cuneo | 443.74 mi (714.13 km) |
| Siegburg to Cuorgne | 374.47 mi (602.66 km) |
| Siegburg to Cusano Milanino | 374.08 mi (602.02 km) |
| Siegburg to Cutro | 941.58 mi (1,515.33 km) |
| Siegburg to Cutrofiano | 908.37 mi (1,461.89 km) |
