| Ridge to Cividale del Friuli | 4,120.31 mi (6,631.00 km) |
| Ridge to Civita Castellana | 4,206.75 mi (6,770.10 km) |
| Ridge to Civitanova Marche | 4,229.33 mi (6,806.45 km) |
| Ridge to Civitavecchia | 4,186.65 mi (6,737.76 km) |
| Ridge to Civitella in Val di Chiana | 4,137.62 mi (6,658.86 km) |
| Ridge to Clusone | 3,980.04 mi (6,405.26 km) |
| Ridge to Coccaglio | 3,991.45 mi (6,423.62 km) |
| Ridge to Codigoro | 4,107.03 mi (6,609.62 km) |
| Ridge to Codogno | 3,992.60 mi (6,425.48 km) |
| Ridge to Codroipo | 4,105.86 mi (6,607.74 km) |
| Ridge to Cogoleto | 3,971.24 mi (6,391.10 km) |
| Ridge to Colle di Val d'Elsa | 4,112.68 mi (6,618.72 km) |
| Ridge to Colle Salvetti | 4,077.50 mi (6,562.10 km) |
| Ridge to Collecchio | 4,027.97 mi (6,482.39 km) |
| Ridge to Colleferro | 4,253.38 mi (6,845.16 km) |
