| San Diego to Collegno | 6,035.64 mi (9,713.43 km) |
| San Diego to Cologno al Serio | 6,080.62 mi (9,785.81 km) |
| San Diego to Cologno Monzese | 6,069.64 mi (9,768.14 km) |
| San Diego to Colorno | 6,136.23 mi (9,875.30 km) |
| San Diego to Comacchio | 6,206.45 mi (9,988.32 km) |
| San Diego to Comiso | 6,698.57 mi (10,780.31 km) |
| San Diego to Como | 6,049.04 mi (9,734.99 km) |
| San Diego to Concordia Sagittaria | 6,171.25 mi (9,931.67 km) |
| San Diego to Concorezzo | 6,068.42 mi (9,766.17 km) |
| San Diego to Conegliano | 6,147.72 mi (9,893.80 km) |
| San Diego to Conselice | 6,204.83 mi (9,985.72 km) |
| San Diego to Conselve | 6,168.42 mi (9,927.11 km) |
| San Diego to Conversano | 6,564.00 mi (10,563.74 km) |
| San Diego to Copertino | 6,632.06 mi (10,673.27 km) |
| San Diego to Copparo | 6,184.79 mi (9,953.45 km) |
