| Troisdorf to Cosenza | 909.54 mi (1,463.76 km) |
| Troisdorf to Cossato | 365.67 mi (588.48 km) |
| Troisdorf to Costa Volpino | 369.98 mi (595.43 km) |
| Troisdorf to Creazzo | 415.75 mi (669.08 km) |
| Troisdorf to Crema | 394.11 mi (634.26 km) |
| Troisdorf to Cremona | 414.51 mi (667.09 km) |
| Troisdorf to Crevalcore | 460.28 mi (740.74 km) |
| Troisdorf to Crispiano | 855.43 mi (1,376.67 km) |
| Troisdorf to Crosia | 905.56 mi (1,457.36 km) |
| Troisdorf to Crotone | 943.83 mi (1,518.94 km) |
| Troisdorf to Cuneo | 444.84 mi (715.90 km) |
| Troisdorf to Cuorgne | 375.62 mi (604.50 km) |
| Troisdorf to Cusano Milanino | 375.61 mi (604.49 km) |
| Troisdorf to Cutro | 943.61 mi (1,518.60 km) |
| Troisdorf to Cutrofiano | 910.52 mi (1,465.34 km) |
