| Valley Center to Cividale del Friuli | 6,144.72 mi (9,888.97 km) |
| Valley Center to Civita Castellana | 6,313.85 mi (10,161.17 km) |
| Valley Center to Civitanova Marche | 6,303.51 mi (10,144.51 km) |
| Valley Center to Civitavecchia | 6,303.89 mi (10,145.14 km) |
| Valley Center to Civitella in Val di Chiana | 6,232.17 mi (10,029.71 km) |
| Valley Center to Clusone | 6,046.88 mi (9,731.51 km) |
| Valley Center to Coccaglio | 6,064.23 mi (9,759.43 km) |
| Valley Center to Codigoro | 6,170.76 mi (9,930.87 km) |
| Valley Center to Codogno | 6,076.04 mi (9,778.44 km) |
| Valley Center to Codroipo | 6,138.12 mi (9,878.34 km) |
| Valley Center to Cogoleto | 6,080.21 mi (9,785.16 km) |
| Valley Center to Colle di Val d'Elsa | 6,213.86 mi (10,000.24 km) |
| Valley Center to Colle Salvetti | 6,181.96 mi (9,948.91 km) |
| Valley Center to Collecchio | 6,113.83 mi (9,839.26 km) |
| Valley Center to Colleferro | 6,363.66 mi (10,241.32 km) |
