| Troisdorf to Busto Garolfo | 372.61 mi (599.66 km) |
| Troisdorf to Cabras | 754.86 mi (1,214.83 km) |
| Troisdorf to Cadelbosco di Sopra | 447.38 mi (719.99 km) |
| Troisdorf to Cadoneghe | 431.07 mi (693.74 km) |
| Troisdorf to Cagli | 564.08 mi (907.80 km) |
| Troisdorf to Cagliari | 806.27 mi (1,297.57 km) |
| Troisdorf to Cairo Montenotte | 446.31 mi (718.26 km) |
| Troisdorf to Caivano | 762.54 mi (1,227.19 km) |
| Troisdorf to Calcinaia | 518.72 mi (834.80 km) |
| Troisdorf to Calcinato | 399.44 mi (642.83 km) |
| Troisdorf to Calderara di Reno | 472.04 mi (759.68 km) |
| Troisdorf to Caldogno | 411.90 mi (662.88 km) |
| Troisdorf to Calenzano | 515.38 mi (829.42 km) |
| Troisdorf to Calolziocorte | 361.99 mi (582.57 km) |
| Troisdorf to Caltagirone | 1,005.64 mi (1,618.42 km) |
