| Diamond Bar to Ascoli Piceno | 6,304.13 mi (10,145.51 km) |
| Diamond Bar to Asola | 6,077.92 mi (9,781.46 km) |
| Diamond Bar to Asolo | 6,093.94 mi (9,807.25 km) |
| Diamond Bar to Assemini | 6,339.12 mi (10,201.83 km) |
| Diamond Bar to Assisi | 6,261.37 mi (10,076.70 km) |
| Diamond Bar to Asti | 6,022.97 mi (9,693.04 km) |
| Diamond Bar to Atessa | 6,373.98 mi (10,257.93 km) |
| Diamond Bar to Atri | 6,331.18 mi (10,189.04 km) |
| Diamond Bar to Atripalda | 6,448.70 mi (10,378.17 km) |
| Diamond Bar to Augusta | 6,662.20 mi (10,721.78 km) |
| Diamond Bar to Aulla | 6,115.77 mi (9,842.38 km) |
| Diamond Bar to Aurisina | 6,153.12 mi (9,902.49 km) |
| Diamond Bar to Avellino | 6,447.53 mi (10,376.29 km) |
| Diamond Bar to Aversa | 6,425.93 mi (10,341.53 km) |
| Diamond Bar to Avezzano | 6,343.29 mi (10,208.55 km) |
