| Troisdorf to Ciampino | 674.51 mi (1,085.52 km) |
| Troisdorf to Cicciano | 766.55 mi (1,233.65 km) |
| Troisdorf to Cingoli | 587.93 mi (946.18 km) |
| Troisdorf to Cinisello Balsamo | 376.00 mi (605.11 km) |
| Troisdorf to Cinisi | 921.03 mi (1,482.26 km) |
| Troisdorf to Cirie | 386.14 mi (621.43 km) |
| Troisdorf to Ciro Marina | 926.63 mi (1,491.26 km) |
| Troisdorf to Cislago | 366.51 mi (589.85 km) |
| Troisdorf to Cisterna di Latina | 692.22 mi (1,114.01 km) |
| Troisdorf to Cisternino | 853.03 mi (1,372.82 km) |
| Troisdorf to Citta di Castello | 561.33 mi (903.37 km) |
| Troisdorf to Citta Sant'Angelo | 659.39 mi (1,061.19 km) |
| Troisdorf to Cittadella | 415.46 mi (668.62 km) |
| Troisdorf to Cittanova | 965.25 mi (1,553.43 km) |
| Troisdorf to Cividale del Friuli | 434.34 mi (699.00 km) |
