| Diamond Bar to Castelletto sopra Ticino | 5,994.94 mi (9,647.92 km) |
| Diamond Bar to Castelli Calepio | 6,039.75 mi (9,720.04 km) |
| Diamond Bar to Castelnovo ne' Monti | 6,118.44 mi (9,846.68 km) |
| Diamond Bar to Castelnuovo Berardenga | 6,211.23 mi (9,996.01 km) |
| Diamond Bar to Castelnuovo di Porto | 6,308.08 mi (10,151.87 km) |
| Diamond Bar to Castelnuovo di Verona | 6,077.60 mi (9,780.95 km) |
| Diamond Bar to Castelnuovo Rangone | 6,129.37 mi (9,864.27 km) |
| Diamond Bar to Castelvetrano | 6,556.22 mi (10,551.22 km) |
| Diamond Bar to Castelvetro di Modena | 6,132.54 mi (9,869.37 km) |
| Diamond Bar to Castenaso | 6,148.55 mi (9,895.14 km) |
| Diamond Bar to Castenedolo | 6,060.83 mi (9,753.96 km) |
| Diamond Bar to Castiglion Fiorentino | 6,224.74 mi (10,017.74 km) |
| Diamond Bar to Castiglione del Lago | 6,239.80 mi (10,041.99 km) |
| Diamond Bar to Castiglione delle Stiviere | 6,070.94 mi (9,770.24 km) |
| Diamond Bar to Castrolibero | 6,580.65 mi (10,590.54 km) |
