| Diamond Bar to Caltagirone | 6,639.14 mi (10,684.66 km) |
| Diamond Bar to Caltanissetta | 6,610.13 mi (10,637.98 km) |
| Diamond Bar to Calvisano | 6,068.74 mi (9,766.70 km) |
| Diamond Bar to Calvizzano | 6,429.02 mi (10,346.50 km) |
| Diamond Bar to Camaiore | 6,141.41 mi (9,883.64 km) |
| Diamond Bar to Cameri | 6,006.62 mi (9,666.72 km) |
| Diamond Bar to Camisano Vicentino | 6,102.83 mi (9,821.56 km) |
| Diamond Bar to Campagna | 6,471.14 mi (10,414.29 km) |
| Diamond Bar to Campagnano di Roma | 6,304.30 mi (10,145.78 km) |
| Diamond Bar to Campi Bisenzio | 6,174.46 mi (9,936.83 km) |
| Diamond Bar to Campi Salentina | 6,576.98 mi (10,584.63 km) |
| Diamond Bar to Campiglia Marittima | 6,197.19 mi (9,973.42 km) |
| Diamond Bar to Campobasso | 6,408.11 mi (10,312.86 km) |
| Diamond Bar to Campobello di Licata | 6,618.17 mi (10,650.92 km) |
| Diamond Bar to Campobello di Mazara | 6,557.41 mi (10,553.13 km) |
