| Valley Center to Collegno | 6,009.48 mi (9,671.32 km) |
| Valley Center to Cologno al Serio | 6,054.19 mi (9,743.27 km) |
| Valley Center to Cologno Monzese | 6,043.25 mi (9,725.68 km) |
| Valley Center to Colorno | 6,109.81 mi (9,832.79 km) |
| Valley Center to Comacchio | 6,179.89 mi (9,945.57 km) |
| Valley Center to Comiso | 6,672.69 mi (10,738.65 km) |
| Valley Center to Como | 6,022.64 mi (9,692.50 km) |
| Valley Center to Concordia Sagittaria | 6,144.51 mi (9,888.63 km) |
| Valley Center to Concorezzo | 6,042.02 mi (9,723.69 km) |
| Valley Center to Conegliano | 6,121.01 mi (9,850.81 km) |
| Valley Center to Conselice | 6,178.32 mi (9,943.05 km) |
| Valley Center to Conselve | 6,141.82 mi (9,884.31 km) |
| Valley Center to Conversano | 6,537.35 mi (10,520.85 km) |
| Valley Center to Copertino | 6,605.39 mi (10,630.34 km) |
| Valley Center to Copparo | 6,158.23 mi (9,910.72 km) |
