| Middlesbrough to Arcos de Valdevez | 938.46 mi (1,510.31 km) |
| Middlesbrough to Arcozelo | 994.05 mi (1,599.77 km) |
| Middlesbrough to Arganil | 1,040.89 mi (1,675.15 km) |
| Middlesbrough to Arouca | 996.08 mi (1,603.03 km) |
| Middlesbrough to Arruda dos Vinhos | 1,137.64 mi (1,830.86 km) |
| Middlesbrough to Aveiro | 1,022.07 mi (1,644.86 km) |
| Middlesbrough to Aver-o-Mar | 973.20 mi (1,566.21 km) |
| Middlesbrough to Aves | 963.43 mi (1,550.50 km) |
| Middlesbrough to Azambuja | 1,129.14 mi (1,817.17 km) |
| Middlesbrough to Baiao | 977.52 mi (1,573.17 km) |
| Middlesbrough to Barcelos | 963.34 mi (1,550.35 km) |
| Middlesbrough to Barreiro | 1,158.67 mi (1,864.69 km) |
| Middlesbrough to Batalha | 1,089.43 mi (1,753.26 km) |
| Middlesbrough to Beja | 1,184.97 mi (1,907.02 km) |
| Middlesbrough to Belas | 1,154.52 mi (1,858.02 km) |
