| Fountain Valley to Collegno | 6,013.79 mi (9,678.26 km) |
| Fountain Valley to Cologno al Serio | 6,056.90 mi (9,747.64 km) |
| Fountain Valley to Cologno Monzese | 6,046.25 mi (9,730.50 km) |
| Fountain Valley to Colorno | 6,112.60 mi (9,837.28 km) |
| Fountain Valley to Comacchio | 6,181.78 mi (9,948.61 km) |
| Fountain Valley to Comiso | 6,678.42 mi (10,747.88 km) |
| Fountain Valley to Como | 6,025.54 mi (9,697.16 km) |
| Fountain Valley to Concordia Sagittaria | 6,145.25 mi (9,889.82 km) |
| Fountain Valley to Concorezzo | 6,044.94 mi (9,728.39 km) |
| Fountain Valley to Conegliano | 6,121.99 mi (9,852.39 km) |
| Fountain Valley to Conselice | 6,180.55 mi (9,946.64 km) |
| Fountain Valley to Conselve | 6,143.52 mi (9,887.04 km) |
| Fountain Valley to Conversano | 6,538.66 mi (10,522.95 km) |
| Fountain Valley to Copertino | 6,606.52 mi (10,632.16 km) |
| Fountain Valley to Copparo | 6,160.19 mi (9,913.87 km) |
