| Diamond Bar to Busto Arsizio | 6,007.37 mi (9,667.92 km) |
| Diamond Bar to Busto Garolfo | 6,011.80 mi (9,675.06 km) |
| Diamond Bar to Cabras | 6,289.07 mi (10,121.28 km) |
| Diamond Bar to Cadelbosco di Sopra | 6,107.35 mi (9,828.83 km) |
| Diamond Bar to Cadoneghe | 6,113.08 mi (9,838.05 km) |
| Diamond Bar to Cagli | 6,236.98 mi (10,037.45 km) |
| Diamond Bar to Cagliari | 6,345.93 mi (10,212.79 km) |
| Diamond Bar to Cairo Montenotte | 6,050.56 mi (9,737.44 km) |
| Diamond Bar to Caivano | 6,430.05 mi (10,348.17 km) |
| Diamond Bar to Calcinaia | 6,164.80 mi (9,921.28 km) |
| Diamond Bar to Calcinato | 6,065.20 mi (9,760.99 km) |
| Diamond Bar to Calderara di Reno | 6,139.08 mi (9,879.89 km) |
| Diamond Bar to Caldogno | 6,091.52 mi (9,803.36 km) |
| Diamond Bar to Calenzano | 6,172.89 mi (9,934.30 km) |
| Diamond Bar to Calolziocorte | 6,016.26 mi (9,682.23 km) |
