| Sundsvall to Smolyan | 1,469.97 mi (2,365.69 km) |
| Sundsvall to Sofia | 1,382.97 mi (2,225.68 km) |
| Sundsvall to Sopot | 1,397.75 mi (2,249.47 km) |
| Sundsvall to Sozopol | 1,444.20 mi (2,324.21 km) |
| Sundsvall to Sredets | 1,442.85 mi (2,322.05 km) |
| Sundsvall to Stamboliyski | 1,431.07 mi (2,303.09 km) |
| Sundsvall to Stara Zagora | 1,420.83 mi (2,286.60 km) |
| Sundsvall to Svilengrad | 1,471.48 mi (2,368.12 km) |
| Sundsvall to Svishtov | 1,337.68 mi (2,152.78 km) |
| Sundsvall to Targovishte | 1,375.29 mi (2,213.32 km) |
| Sundsvall to Teteven | 1,375.45 mi (2,213.57 km) |
| Sundsvall to Troyan | 1,381.59 mi (2,223.45 km) |
| Sundsvall to Tryavna | 1,389.96 mi (2,236.93 km) |
| Sundsvall to Tutrakan | 1,321.79 mi (2,127.22 km) |
| Sundsvall to Varna | 1,393.19 mi (2,242.12 km) |
