| Rancho Santa Margarita to Castelfidardo | 6,284.20 mi (10,113.45 km) |
| Rancho Santa Margarita to Castelfiorentino | 6,194.41 mi (9,968.93 km) |
| Rancho Santa Margarita to Castelfranco di Sopra | 6,212.35 mi (9,997.81 km) |
| Rancho Santa Margarita to Castelfranco di Sotto | 6,182.10 mi (9,949.13 km) |
| Rancho Santa Margarita to Castelfranco Emilia | 6,144.89 mi (9,889.25 km) |
| Rancho Santa Margarita to Castelfranco Veneto | 6,116.22 mi (9,843.11 km) |
| Rancho Santa Margarita to Castellabate | 6,501.65 mi (10,463.39 km) |
| Rancho Santa Margarita to Castellammare del Golfo | 6,553.66 mi (10,547.10 km) |
| Rancho Santa Margarita to Castellammare di Stabia | 6,463.72 mi (10,402.35 km) |
| Rancho Santa Margarita to Castellamonte | 5,995.76 mi (9,649.25 km) |
| Rancho Santa Margarita to Castellana Grotte | 6,538.55 mi (10,522.78 km) |
| Rancho Santa Margarita to Castellaneta | 6,545.18 mi (10,533.46 km) |
| Rancho Santa Margarita to Castellanza | 6,022.65 mi (9,692.52 km) |
| Rancho Santa Margarita to Castellarano | 6,137.82 mi (9,877.87 km) |
| Rancho Santa Margarita to Castelleone | 6,066.99 mi (9,763.87 km) |
