| Diamond Bar to Alenquer | 5,643.13 mi (9,081.74 km) |
| Diamond Bar to Alfena | 5,571.63 mi (8,966.67 km) |
| Diamond Bar to Alijo | 5,613.11 mi (9,033.42 km) |
| Diamond Bar to Aljustrel | 5,727.46 mi (9,217.45 km) |
| Diamond Bar to Almada | 5,652.64 mi (9,097.04 km) |
| Diamond Bar to Almargem | 5,640.78 mi (9,077.95 km) |
| Diamond Bar to Almeirim | 5,653.79 mi (9,098.89 km) |
| Diamond Bar to Amadora | 5,647.20 mi (9,088.29 km) |
| Diamond Bar to Amarante | 5,589.28 mi (8,995.08 km) |
| Diamond Bar to Amares | 5,563.57 mi (8,953.70 km) |
| Diamond Bar to Amora | 5,656.59 mi (9,103.40 km) |
| Diamond Bar to Anadia | 5,609.37 mi (9,027.41 km) |
| Diamond Bar to Angra do Heroismo | 4,834.52 mi (7,780.40 km) |
| Diamond Bar to Ansiao | 5,631.21 mi (9,062.55 km) |
| Diamond Bar to Anta | 5,577.22 mi (8,975.67 km) |
