| Smolyan to Sangeorz-Bai | 399.82 mi (643.45 km) |
| Smolyan to Sannicolau Mare | 370.48 mi (596.23 km) |
| Smolyan to Santana | 365.70 mi (588.53 km) |
| Smolyan to Satu Mare | 437.93 mi (704.77 km) |
| Smolyan to Scobinti | 415.54 mi (668.74 km) |
| Smolyan to Scornicesti | 206.50 mi (332.33 km) |
| Smolyan to Sebes | 307.60 mi (495.04 km) |
| Smolyan to Seini | 431.54 mi (694.50 km) |
| Smolyan to Sfantu-Gheorghe | 300.68 mi (483.89 km) |
| Smolyan to Sibiu | 292.13 mi (470.14 km) |
| Smolyan to Sighetu Marmatiei | 440.20 mi (708.43 km) |
| Smolyan to Sighisoara | 320.18 mi (515.28 km) |
| Smolyan to Simeria | 306.62 mi (493.46 km) |
| Smolyan to Sinaia | 263.73 mi (424.43 km) |
| Smolyan to Slatina | 197.40 mi (317.68 km) |
