| Siegen to Cologno al Serio | 374.27 mi (602.33 km) |
| Siegen to Cologno Monzese | 374.49 mi (602.69 km) |
| Siegen to Colorno | 425.41 mi (684.62 km) |
| Siegen to Comacchio | 468.77 mi (754.42 km) |
| Siegen to Comiso | 1,015.91 mi (1,634.96 km) |
| Siegen to Como | 353.92 mi (569.58 km) |
| Siegen to Concordia Sagittaria | 417.26 mi (671.52 km) |
| Siegen to Concorezzo | 370.74 mi (596.65 km) |
| Siegen to Conegliano | 397.03 mi (638.96 km) |
| Siegen to Conselice | 474.18 mi (763.11 km) |
| Siegen to Conselve | 428.81 mi (690.10 km) |
| Siegen to Conversano | 811.49 mi (1,305.97 km) |
| Siegen to Copertino | 877.75 mi (1,412.61 km) |
| Siegen to Copparo | 449.48 mi (723.37 km) |
| Siegen to Corato | 782.48 mi (1,259.28 km) |
