| Mastic to Cividale del Friuli | 4,122.91 mi (6,635.19 km) |
| Mastic to Civita Castellana | 4,208.87 mi (6,773.52 km) |
| Mastic to Civitanova Marche | 4,231.63 mi (6,810.15 km) |
| Mastic to Civitavecchia | 4,188.71 mi (6,741.08 km) |
| Mastic to Civitella in Val di Chiana | 4,139.84 mi (6,662.42 km) |
| Mastic to Clusone | 3,982.47 mi (6,409.16 km) |
| Mastic to Coccaglio | 3,993.84 mi (6,427.46 km) |
| Mastic to Codigoro | 4,109.42 mi (6,613.48 km) |
| Mastic to Codogno | 3,994.93 mi (6,429.22 km) |
| Mastic to Codroipo | 4,108.42 mi (6,611.87 km) |
| Mastic to Cogoleto | 3,973.43 mi (6,394.62 km) |
| Mastic to Colle di Val d'Elsa | 4,114.87 mi (6,622.24 km) |
| Mastic to Colle Salvetti | 4,079.67 mi (6,565.60 km) |
| Mastic to Collecchio | 4,030.27 mi (6,486.09 km) |
| Mastic to Colleferro | 4,255.47 mi (6,848.52 km) |
