| Troisdorf to Civita Castellana | 639.01 mi (1,028.39 km) |
| Troisdorf to Civitanova Marche | 604.05 mi (972.12 km) |
| Troisdorf to Civitavecchia | 641.19 mi (1,031.89 km) |
| Troisdorf to Civitella in Val di Chiana | 554.14 mi (891.80 km) |
| Troisdorf to Clusone | 364.11 mi (585.97 km) |
| Troisdorf to Coccaglio | 385.44 mi (620.31 km) |
| Troisdorf to Codigoro | 472.86 mi (761.00 km) |
| Troisdorf to Codogno | 408.13 mi (656.82 km) |
| Troisdorf to Codroipo | 428.51 mi (689.61 km) |
| Troisdorf to Cogoleto | 449.41 mi (723.26 km) |
| Troisdorf to Colle di Val d'Elsa | 545.27 mi (877.53 km) |
| Troisdorf to Colle Salvetti | 522.34 mi (840.62 km) |
| Troisdorf to Collecchio | 442.46 mi (712.08 km) |
| Troisdorf to Colleferro | 686.62 mi (1,105.00 km) |
| Troisdorf to Collegno | 396.97 mi (638.85 km) |
