| Opmeer to Arico el Nuevo | 2,017.66 mi (3,247.11 km) |
| Opmeer to Armilla | 1,151.30 mi (1,852.84 km) |
| Opmeer to Arnedo | 794.77 mi (1,279.06 km) |
| Opmeer to Arona | 2,028.32 mi (3,264.27 km) |
| Opmeer to Arrecife | 1,891.58 mi (3,044.20 km) |
| Opmeer to Arrigorriaga | 748.39 mi (1,204.42 km) |
| Opmeer to Arroyomolinos | 955.01 mi (1,536.95 km) |
| Opmeer to Arteijo | 896.46 mi (1,442.72 km) |
| Opmeer to Arucas | 1,995.60 mi (3,211.61 km) |
| Opmeer to Aspe | 1,028.89 mi (1,655.83 km) |
| Opmeer to Astorga | 872.07 mi (1,403.46 km) |
| Opmeer to Atarfe | 1,147.80 mi (1,847.20 km) |
| Opmeer to Avila | 947.69 mi (1,525.16 km) |
| Opmeer to Aviles | 804.34 mi (1,294.47 km) |
| Opmeer to Ayamonte | 1,225.56 mi (1,972.35 km) |
