| Diamond Bar to Cognac | 5,690.68 mi (9,158.26 km) |
| Diamond Bar to Cogolin | 6,050.16 mi (9,736.79 km) |
| Diamond Bar to Colmar | 5,833.61 mi (9,388.29 km) |
| Diamond Bar to Colombes | 5,627.94 mi (9,057.30 km) |
| Diamond Bar to Colomiers | 5,848.42 mi (9,412.12 km) |
| Diamond Bar to Combs-la-Ville | 5,650.17 mi (9,093.07 km) |
| Diamond Bar to Comines | 5,564.68 mi (8,955.49 km) |
| Diamond Bar to Compiegne | 5,623.17 mi (9,049.61 km) |
| Diamond Bar to Concarneau | 5,463.76 mi (8,793.08 km) |
| Diamond Bar to Conde-sur-l'Escaut | 5,598.03 mi (9,009.16 km) |
| Diamond Bar to Conflans-Sainte-Honorine | 5,619.28 mi (9,043.36 km) |
| Diamond Bar to Corbas | 5,874.17 mi (9,453.56 km) |
| Diamond Bar to Corbeil-Essonnes | 5,650.27 mi (9,093.24 km) |
| Diamond Bar to Cormeilles-en-Parisis | 5,623.88 mi (9,050.76 km) |
| Diamond Bar to Cosne sur Loire | 5,722.68 mi (9,209.77 km) |
