| Siegburg to Catania | 997.35 mi (1,605.09 km) |
| Siegburg to Catanzaro | 940.60 mi (1,513.75 km) |
| Siegburg to Cattolica | 538.07 mi (865.93 km) |
| Siegburg to Cava de' Tirreni | 784.99 mi (1,263.32 km) |
| Siegburg to Cavallino | 896.68 mi (1,443.07 km) |
| Siegburg to Cavarzere | 451.52 mi (726.64 km) |
| Siegburg to Cave | 677.82 mi (1,090.85 km) |
| Siegburg to Cavriago | 448.91 mi (722.46 km) |
| Siegburg to Cavriglia | 541.75 mi (871.86 km) |
| Siegburg to Cazzago San Martino | 383.27 mi (616.82 km) |
| Siegburg to Ceccano | 701.60 mi (1,129.11 km) |
| Siegburg to Cecina | 539.99 mi (869.02 km) |
| Siegburg to Cefalu | 943.08 mi (1,517.74 km) |
| Siegburg to Ceglie Messapico | 857.63 mi (1,380.23 km) |
| Siegburg to Celano | 673.24 mi (1,083.48 km) |
