| Diamond Bar to Campo de Criptana | 5,872.61 mi (9,451.05 km) |
| Diamond Bar to Campos del Puerto | 6,111.76 mi (9,835.93 km) |
| Diamond Bar to Canals | 5,994.08 mi (9,646.54 km) |
| Diamond Bar to Candelaria | 5,739.00 mi (9,236.03 km) |
| Diamond Bar to Canet de Mar | 5,990.89 mi (9,641.41 km) |
| Diamond Bar to Cangas | 5,518.07 mi (8,880.48 km) |
| Diamond Bar to Cangas de Narcea | 5,569.53 mi (8,963.30 km) |
| Diamond Bar to Canovellas | 5,978.45 mi (9,621.38 km) |
| Diamond Bar to Canteras | 6,038.40 mi (9,717.87 km) |
| Diamond Bar to Cantillana | 5,841.23 mi (9,400.55 km) |
| Diamond Bar to Capdepera | 6,114.33 mi (9,840.07 km) |
| Diamond Bar to Carballo | 5,482.27 mi (8,822.87 km) |
| Diamond Bar to Carcagente | 5,991.96 mi (9,643.13 km) |
| Diamond Bar to Cardedeu | 5,980.23 mi (9,624.26 km) |
| Diamond Bar to Carlet | 5,984.25 mi (9,630.71 km) |
