| Neckarsulm to Smolyan | 913.86 mi (1,470.71 km) |
| Neckarsulm to Sofia | 810.65 mi (1,304.61 km) |
| Neckarsulm to Sopot | 869.97 mi (1,400.08 km) |
| Neckarsulm to Sozopol | 1,001.81 mi (1,612.26 km) |
| Neckarsulm to Sredets | 983.40 mi (1,582.63 km) |
| Neckarsulm to Stamboliyski | 883.05 mi (1,421.12 km) |
| Neckarsulm to Stara Zagora | 915.71 mi (1,473.70 km) |
| Neckarsulm to Svilengrad | 965.98 mi (1,554.59 km) |
| Neckarsulm to Svishtov | 857.08 mi (1,379.33 km) |
| Neckarsulm to Targovishte | 922.90 mi (1,485.27 km) |
| Neckarsulm to Teteven | 839.31 mi (1,350.73 km) |
| Neckarsulm to Troyan | 859.08 mi (1,382.55 km) |
| Neckarsulm to Tryavna | 892.07 mi (1,435.65 km) |
| Neckarsulm to Tutrakan | 895.90 mi (1,441.81 km) |
| Neckarsulm to Varna | 981.11 mi (1,578.95 km) |
