| Niort to Smolyan | 1,287.62 mi (2,072.23 km) |
| Niort to Sofia | 1,193.81 mi (1,921.25 km) |
| Niort to Sopot | 1,262.66 mi (2,032.06 km) |
| Niort to Sozopol | 1,409.00 mi (2,267.56 km) |
| Niort to Sredets | 1,386.79 mi (2,231.81 km) |
| Niort to Stamboliyski | 1,265.15 mi (2,036.06 km) |
| Niort to Stara Zagora | 1,310.82 mi (2,109.56 km) |
| Niort to Svilengrad | 1,354.03 mi (2,179.09 km) |
| Niort to Svishtov | 1,269.67 mi (2,043.34 km) |
| Niort to Targovishte | 1,336.35 mi (2,150.65 km) |
| Niort to Teteven | 1,233.35 mi (1,984.88 km) |
| Niort to Troyan | 1,255.58 mi (2,020.66 km) |
| Niort to Tryavna | 1,293.32 mi (2,081.40 km) |
| Niort to Tutrakan | 1,321.36 mi (2,126.52 km) |
| Niort to Varna | 1,400.70 mi (2,254.20 km) |
