| Somain to Arcozelo | 860.36 mi (1,384.61 km) |
| Somain to Arganil | 889.18 mi (1,431.00 km) |
| Somain to Arouca | 854.65 mi (1,375.43 km) |
| Somain to Arruda dos Vinhos | 990.06 mi (1,593.34 km) |
| Somain to Aveiro | 883.95 mi (1,422.58 km) |
| Somain to Aver-o-Mar | 845.64 mi (1,360.92 km) |
| Somain to Aves | 828.56 mi (1,333.44 km) |
| Somain to Azambuja | 979.34 mi (1,576.10 km) |
| Somain to Baiao | 835.16 mi (1,344.06 km) |
| Somain to Barcelos | 834.62 mi (1,343.19 km) |
| Somain to Barreiro | 1,008.38 mi (1,622.83 km) |
| Somain to Batalha | 943.88 mi (1,519.03 km) |
| Somain to Beja | 1,012.87 mi (1,630.06 km) |
| Somain to Belas | 1,008.12 mi (1,622.41 km) |
| Somain to Benavente | 983.18 mi (1,582.27 km) |
