| Diamond Bar to Cosham | 5,429.49 mi (8,737.91 km) |
| Diamond Bar to Costessey | 5,419.07 mi (8,721.15 km) |
| Diamond Bar to Cottingham | 5,317.19 mi (8,557.19 km) |
| Diamond Bar to Coulsdon | 5,437.96 mi (8,751.54 km) |
| Diamond Bar to Coventry | 5,344.52 mi (8,601.17 km) |
| Diamond Bar to Cowdenbeath | 5,124.88 mi (8,247.70 km) |
| Diamond Bar to Cowes | 5,425.50 mi (8,731.50 km) |
| Diamond Bar to Cowley | 5,417.44 mi (8,718.52 km) |
| Diamond Bar to Cowley | 5,384.38 mi (8,665.33 km) |
| Diamond Bar to Cramlington | 5,223.14 mi (8,405.84 km) |
| Diamond Bar to Cranleigh | 5,435.38 mi (8,747.39 km) |
| Diamond Bar to Crawley | 5,446.09 mi (8,764.63 km) |
| Diamond Bar to Crayford | 5,442.39 mi (8,758.68 km) |
| Diamond Bar to Crewe | 5,284.06 mi (8,503.88 km) |
| Diamond Bar to Crigglestone | 5,288.94 mi (8,511.72 km) |
