| Siegburg to Cologno al Serio | 378.36 mi (608.91 km) |
| Siegburg to Cologno Monzese | 376.60 mi (606.08 km) |
| Siegburg to Colorno | 431.28 mi (694.08 km) |
| Siegburg to Comacchio | 480.59 mi (773.43 km) |
| Siegburg to Comiso | 1,024.21 mi (1,648.31 km) |
| Siegburg to Como | 355.50 mi (572.12 km) |
| Siegburg to Concordia Sagittaria | 433.76 mi (698.07 km) |
| Siegburg to Concorezzo | 373.19 mi (600.60 km) |
| Siegburg to Conegliano | 412.10 mi (663.21 km) |
| Siegburg to Conselice | 484.49 mi (779.71 km) |
| Siegburg to Conselve | 440.74 mi (709.30 km) |
| Siegburg to Conversano | 828.49 mi (1,333.32 km) |
| Siegburg to Copertino | 895.39 mi (1,440.99 km) |
| Siegburg to Copparo | 460.56 mi (741.20 km) |
| Siegburg to Corato | 798.43 mi (1,284.95 km) |
