| Riorges to Smolyan | 1,071.62 mi (1,724.60 km) |
| Riorges to Sofia | 977.63 mi (1,573.34 km) |
| Riorges to Sopot | 1,046.54 mi (1,684.24 km) |
| Riorges to Sozopol | 1,193.11 mi (1,920.13 km) |
| Riorges to Sredets | 1,170.79 mi (1,884.21 km) |
| Riorges to Stamboliyski | 1,048.99 mi (1,688.18 km) |
| Riorges to Stara Zagora | 1,094.70 mi (1,761.75 km) |
| Riorges to Svilengrad | 1,137.85 mi (1,831.19 km) |
| Riorges to Svishtov | 1,054.28 mi (1,696.70 km) |
| Riorges to Targovishte | 1,120.88 mi (1,803.88 km) |
| Riorges to Teteven | 1,017.26 mi (1,637.12 km) |
| Riorges to Troyan | 1,039.53 mi (1,672.96 km) |
| Riorges to Tryavna | 1,077.36 mi (1,733.84 km) |
| Riorges to Tutrakan | 1,106.87 mi (1,781.34 km) |
| Riorges to Varna | 1,185.51 mi (1,907.90 km) |
