| Fountain Valley to Castelfidardo | 6,290.70 mi (10,123.90 km) |
| Fountain Valley to Castelfiorentino | 6,201.37 mi (9,980.14 km) |
| Fountain Valley to Castelfranco di Sopra | 6,219.20 mi (10,008.83 km) |
| Fountain Valley to Castelfranco di Sotto | 6,189.09 mi (9,960.37 km) |
| Fountain Valley to Castelfranco Emilia | 6,151.62 mi (9,900.07 km) |
| Fountain Valley to Castelfranco Veneto | 6,122.54 mi (9,853.28 km) |
| Fountain Valley to Castellabate | 6,508.54 mi (10,474.49 km) |
| Fountain Valley to Castellammare del Golfo | 6,561.47 mi (10,559.67 km) |
| Fountain Valley to Castellammare di Stabia | 6,470.62 mi (10,413.46 km) |
| Fountain Valley to Castellamonte | 6,002.92 mi (9,660.76 km) |
| Fountain Valley to Castellana Grotte | 6,544.85 mi (10,532.92 km) |
| Fountain Valley to Castellaneta | 6,551.59 mi (10,543.76 km) |
| Fountain Valley to Castellanza | 6,029.54 mi (9,703.61 km) |
| Fountain Valley to Castellarano | 6,144.61 mi (9,888.79 km) |
| Fountain Valley to Castelleone | 6,073.79 mi (9,774.82 km) |
