| Alliance to Cividale del Friuli | 4,457.51 mi (7,173.67 km) |
| Alliance to Civita Castellana | 4,562.04 mi (7,341.89 km) |
| Alliance to Civitanova Marche | 4,578.03 mi (7,367.63 km) |
| Alliance to Civitavecchia | 4,543.85 mi (7,312.62 km) |
| Alliance to Civitella in Val di Chiana | 4,489.64 mi (7,225.38 km) |
| Alliance to Clusone | 4,324.61 mi (6,959.79 km) |
| Alliance to Coccaglio | 4,337.40 mi (6,980.38 km) |
| Alliance to Codigoro | 4,452.30 mi (7,165.28 km) |
| Alliance to Codogno | 4,340.83 mi (6,985.89 km) |
| Alliance to Codroipo | 4,444.53 mi (7,152.78 km) |
| Alliance to Cogoleto | 4,324.68 mi (6,959.90 km) |
| Alliance to Colle di Val d'Elsa | 4,465.85 mi (7,187.09 km) |
| Alliance to Colle Salvetti | 4,431.01 mi (7,131.02 km) |
| Alliance to Collecchio | 4,377.07 mi (7,044.22 km) |
| Alliance to Colleferro | 4,609.75 mi (7,418.68 km) |
