| Mountain Ash to Cividale del Friuli | 852.88 mi (1,372.58 km) |
| Mountain Ash to Civita Castellana | 983.31 mi (1,582.48 km) |
| Mountain Ash to Civitanova Marche | 982.78 mi (1,581.63 km) |
| Mountain Ash to Civitavecchia | 972.14 mi (1,564.51 km) |
| Mountain Ash to Civitella in Val di Chiana | 903.43 mi (1,453.93 km) |
| Mountain Ash to Clusone | 725.44 mi (1,167.48 km) |
| Mountain Ash to Coccaglio | 740.40 mi (1,191.57 km) |
| Mountain Ash to Codigoro | 852.88 mi (1,372.57 km) |
| Mountain Ash to Codogno | 748.49 mi (1,204.58 km) |
| Mountain Ash to Codroipo | 839.95 mi (1,351.77 km) |
| Mountain Ash to Cogoleto | 748.28 mi (1,204.24 km) |
| Mountain Ash to Colle di Val d'Elsa | 883.52 mi (1,421.88 km) |
| Mountain Ash to Colle Salvetti | 850.86 mi (1,369.32 km) |
| Mountain Ash to Collecchio | 786.04 mi (1,265.01 km) |
| Mountain Ash to Colleferro | 1,032.99 mi (1,662.43 km) |
