| Riom to Smolyan | 1,114.17 mi (1,793.08 km) |
| Riom to Sofia | 1,020.89 mi (1,642.96 km) |
| Riom to Sopot | 1,090.09 mi (1,754.34 km) |
| Riom to Sozopol | 1,237.09 mi (1,990.91 km) |
| Riom to Sredets | 1,214.63 mi (1,954.76 km) |
| Riom to Stamboliyski | 1,092.02 mi (1,757.44 km) |
| Riom to Stara Zagora | 1,138.28 mi (1,831.88 km) |
| Riom to Svilengrad | 1,181.00 mi (1,900.64 km) |
| Riom to Svishtov | 1,098.70 mi (1,768.18 km) |
| Riom to Targovishte | 1,165.23 mi (1,875.26 km) |
| Riom to Teteven | 1,060.94 mi (1,707.42 km) |
| Riom to Troyan | 1,083.27 mi (1,743.36 km) |
| Riom to Tryavna | 1,121.25 mi (1,804.48 km) |
| Riom to Tutrakan | 1,151.71 mi (1,853.50 km) |
| Riom to Varna | 1,230.03 mi (1,979.54 km) |
