| Heerlen to Arico el Nuevo | 1,956.58 mi (3,148.82 km) |
| Heerlen to Armilla | 1,059.95 mi (1,705.82 km) |
| Heerlen to Arnedo | 710.45 mi (1,143.36 km) |
| Heerlen to Arona | 1,967.67 mi (3,166.65 km) |
| Heerlen to Arrecife | 1,822.12 mi (2,932.42 km) |
| Heerlen to Arrigorriaga | 674.00 mi (1,084.69 km) |
| Heerlen to Arroyomolinos | 873.82 mi (1,406.28 km) |
| Heerlen to Arteijo | 857.15 mi (1,379.46 km) |
| Heerlen to Arucas | 1,931.14 mi (3,107.87 km) |
| Heerlen to Aspe | 926.78 mi (1,491.51 km) |
| Heerlen to Astorga | 813.51 mi (1,309.22 km) |
| Heerlen to Atarfe | 1,056.94 mi (1,700.98 km) |
| Heerlen to Avila | 872.30 mi (1,403.83 km) |
| Heerlen to Aviles | 751.79 mi (1,209.90 km) |
| Heerlen to Ayamonte | 1,151.81 mi (1,853.66 km) |
