| Diamond Bar to Arcos de Valdevez | 5,550.38 mi (8,932.47 km) |
| Diamond Bar to Arcozelo | 5,574.60 mi (8,971.45 km) |
| Diamond Bar to Arganil | 5,634.28 mi (9,067.49 km) |
| Diamond Bar to Arouca | 5,596.03 mi (9,005.94 km) |
| Diamond Bar to Arruda dos Vinhos | 5,643.81 mi (9,082.83 km) |
| Diamond Bar to Aveiro | 5,591.92 mi (8,999.33 km) |
| Diamond Bar to Aver-o-Mar | 5,554.62 mi (8,939.30 km) |
| Diamond Bar to Aves | 5,572.38 mi (8,967.89 km) |
| Diamond Bar to Azambuja | 5,648.81 mi (9,090.88 km) |
| Diamond Bar to Baiao | 5,594.89 mi (9,004.10 km) |
| Diamond Bar to Barcelos | 5,556.16 mi (8,941.77 km) |
| Diamond Bar to Barreiro | 5,657.13 mi (9,104.27 km) |
| Diamond Bar to Batalha | 5,627.05 mi (9,055.86 km) |
| Diamond Bar to Beja | 5,734.61 mi (9,228.96 km) |
| Diamond Bar to Belas | 5,643.79 mi (9,082.81 km) |
