| Siano to Trancoso | 1,150.06 mi (1,850.84 km) |
| Siano to Trofa | 1,208.23 mi (1,944.46 km) |
| Siano to Vagos | 1,221.49 mi (1,965.79 km) |
| Siano to Valadares | 1,214.21 mi (1,954.09 km) |
| Siano to Valbom | 1,210.15 mi (1,947.54 km) |
| Siano to Vale de Cambra | 1,203.92 mi (1,937.52 km) |
| Siano to Valenca | 1,208.00 mi (1,944.09 km) |
| Siano to Valongo | 1,206.31 mi (1,941.36 km) |
| Siano to Vendas Novas | 1,234.65 mi (1,986.98 km) |
| Siano to Viana do Castelo | 1,219.94 mi (1,963.31 km) |
| Siano to Vieira do Minho | 1,184.34 mi (1,906.01 km) |
| Siano to Vila do Conde | 1,217.66 mi (1,959.63 km) |
| Siano to Vila Franca do Campo | 2,138.57 mi (3,441.69 km) |
| Siano to Vila Nova de Cerveira | 1,210.80 mi (1,948.59 km) |
| Siano to Vila Nova de Gaia | 1,212.73 mi (1,951.70 km) |
