| Diamond Bar to Capodrise | 6,424.61 mi (10,339.41 km) |
| Diamond Bar to Capoterra | 6,343.72 mi (10,209.23 km) |
| Diamond Bar to Capriolo | 6,040.61 mi (9,721.42 km) |
| Diamond Bar to Capua | 6,418.82 mi (10,330.09 km) |
| Diamond Bar to Capurso | 6,506.86 mi (10,471.78 km) |
| Diamond Bar to Carate Brianza | 6,010.01 mi (9,672.18 km) |
| Diamond Bar to Caravaggio | 6,038.63 mi (9,718.24 km) |
| Diamond Bar to Carbonera | 6,111.41 mi (9,835.36 km) |
| Diamond Bar to Carbonia | 6,328.07 mi (10,184.04 km) |
| Diamond Bar to Cardito | 6,430.05 mi (10,348.17 km) |
| Diamond Bar to Carignano | 6,005.03 mi (9,664.15 km) |
| Diamond Bar to Carini | 6,545.47 mi (10,533.91 km) |
| Diamond Bar to Carlentini | 6,653.66 mi (10,708.04 km) |
| Diamond Bar to Carmagnola | 6,009.36 mi (9,671.13 km) |
| Diamond Bar to Carmiano | 6,580.92 mi (10,590.97 km) |
