| Smolyan to Sabinanigo | 1,282.86 mi (2,064.57 km) |
| Smolyan to Sagunto | 1,311.53 mi (2,110.70 km) |
| Smolyan to Salamanca | 1,569.16 mi (2,525.32 km) |
| Smolyan to Salobrena | 1,544.35 mi (2,485.39 km) |
| Smolyan to Salou | 1,219.47 mi (1,962.55 km) |
| Smolyan to Salt | 1,126.23 mi (1,812.48 km) |
| Smolyan to Salvatierra de Mino | 1,698.67 mi (2,733.75 km) |
| Smolyan to Sama | 1,545.17 mi (2,486.71 km) |
| Smolyan to San Adrian de Besos | 1,160.00 mi (1,866.84 km) |
| Smolyan to San Agustin de Guadalix | 1,468.28 mi (2,362.96 km) |
| Smolyan to San Andres de la Barca | 1,172.21 mi (1,886.49 km) |
| Smolyan to San Andres de Llevaneras | 1,145.11 mi (1,842.87 km) |
| Smolyan to San Andres del Rabanedo | 1,546.67 mi (2,489.13 km) |
| Smolyan to San Bartolome | 2,446.26 mi (3,936.87 km) |
| Smolyan to San Baudilio de Llobregat | 1,169.89 mi (1,882.76 km) |
