| Smolyan to Setubal | 1,777.82 mi (2,861.12 km) |
| Smolyan to Sever do Vouga | 1,710.57 mi (2,752.89 km) |
| Smolyan to Silves | 1,784.30 mi (2,871.55 km) |
| Smolyan to Sines | 1,788.62 mi (2,878.51 km) |
| Smolyan to Sintra | 1,797.68 mi (2,893.09 km) |
| Smolyan to Sobrado de Paiva | 1,700.94 mi (2,737.40 km) |
| Smolyan to Sobral de Monte Agraco | 1,781.13 mi (2,866.46 km) |
| Smolyan to Soure | 1,735.38 mi (2,792.83 km) |
| Smolyan to Tabua | 1,699.25 mi (2,734.68 km) |
| Smolyan to Tavira | 1,745.21 mi (2,808.64 km) |
| Smolyan to Tomar | 1,732.27 mi (2,787.81 km) |
| Smolyan to Tondela | 1,699.50 mi (2,735.08 km) |
| Smolyan to Torre de Moncorvo | 1,640.84 mi (2,640.67 km) |
| Smolyan to Torres Novas | 1,740.71 mi (2,801.41 km) |
| Smolyan to Torres Vedras | 1,785.74 mi (2,873.88 km) |
