| Royston to Arcos de Valdevez | 807.22 mi (1,299.09 km) |
| Royston to Arcozelo | 861.44 mi (1,386.36 km) |
| Royston to Arganil | 902.00 mi (1,451.63 km) |
| Royston to Arouca | 860.49 mi (1,384.83 km) |
| Royston to Arruda dos Vinhos | 1,001.46 mi (1,611.70 km) |
| Royston to Aveiro | 888.14 mi (1,429.32 km) |
| Royston to Aver-o-Mar | 842.69 mi (1,356.18 km) |
| Royston to Aves | 829.89 mi (1,335.59 km) |
| Royston to Azambuja | 992.02 mi (1,596.50 km) |
| Royston to Baiao | 841.31 mi (1,353.95 km) |
| Royston to Barcelos | 832.22 mi (1,339.32 km) |
| Royston to Barreiro | 1,021.67 mi (1,644.22 km) |
| Royston to Batalha | 953.49 mi (1,534.49 km) |
| Royston to Beja | 1,040.11 mi (1,673.89 km) |
| Royston to Belas | 1,018.98 mi (1,639.88 km) |
