| Opmeer to Arcozelo | 1,025.64 mi (1,650.61 km) |
| Opmeer to Arganil | 1,058.03 mi (1,702.74 km) |
| Opmeer to Arouca | 1,021.37 mi (1,643.74 km) |
| Opmeer to Arruda dos Vinhos | 1,158.92 mi (1,865.10 km) |
| Opmeer to Aveiro | 1,050.31 mi (1,690.31 km) |
| Opmeer to Aver-o-Mar | 1,009.53 mi (1,624.68 km) |
| Opmeer to Aves | 993.75 mi (1,599.29 km) |
| Opmeer to Azambuja | 1,148.50 mi (1,848.34 km) |
| Opmeer to Baiao | 1,001.87 mi (1,612.35 km) |
| Opmeer to Barcelos | 998.63 mi (1,607.14 km) |
| Opmeer to Barreiro | 1,177.80 mi (1,895.49 km) |
| Opmeer to Batalha | 1,112.08 mi (1,789.71 km) |
| Opmeer to Beja | 1,185.54 mi (1,907.94 km) |
| Opmeer to Belas | 1,176.89 mi (1,894.02 km) |
| Opmeer to Benavente | 1,152.67 mi (1,855.04 km) |
