| Diamond Bar to Cockermouth | 5,186.81 mi (8,347.37 km) |
| Diamond Bar to Colchester | 5,444.95 mi (8,762.80 km) |
| Diamond Bar to Coleford | 5,336.04 mi (8,587.52 km) |
| Diamond Bar to Colne | 5,259.10 mi (8,463.70 km) |
| Diamond Bar to Colwyn Bay | 5,235.28 mi (8,425.37 km) |
| Diamond Bar to Congleton | 5,288.40 mi (8,510.86 km) |
| Diamond Bar to Conisbrough | 5,305.56 mi (8,538.48 km) |
| Diamond Bar to Connahs Quay | 5,259.09 mi (8,463.69 km) |
| Diamond Bar to Consett | 5,225.93 mi (8,410.32 km) |
| Diamond Bar to Conwy | 5,231.52 mi (8,419.32 km) |
| Diamond Bar to Cookstown | 5,080.05 mi (8,175.54 km) |
| Diamond Bar to Corby | 5,366.79 mi (8,637.01 km) |
| Diamond Bar to Corfe Mullen | 5,401.21 mi (8,692.41 km) |
| Diamond Bar to Corsham | 5,366.05 mi (8,635.83 km) |
| Diamond Bar to Coseley | 5,319.79 mi (8,561.37 km) |
