| Altena to Civita Castellana | 660.97 mi (1,063.73 km) |
| Altena to Civitanova Marche | 621.04 mi (999.47 km) |
| Altena to Civitavecchia | 664.87 mi (1,070.00 km) |
| Altena to Civitella in Val di Chiana | 576.50 mi (927.78 km) |
| Altena to Clusone | 388.48 mi (625.20 km) |
| Altena to Coccaglio | 410.23 mi (660.21 km) |
| Altena to Codigoro | 491.56 mi (791.09 km) |
| Altena to Codogno | 434.44 mi (699.16 km) |
| Altena to Codroipo | 441.16 mi (709.98 km) |
| Altena to Cogoleto | 479.62 mi (771.87 km) |
| Altena to Colle di Val d'Elsa | 569.28 mi (916.17 km) |
| Altena to Colle Salvetti | 547.94 mi (881.83 km) |
| Altena to Collecchio | 467.57 mi (752.49 km) |
| Altena to Colleferro | 707.77 mi (1,139.05 km) |
| Altena to Collegno | 429.95 mi (691.95 km) |
