| Karlstad to Smolyan | 1,320.21 mi (2,124.67 km) |
| Karlstad to Sofia | 1,225.83 mi (1,972.78 km) |
| Karlstad to Sopot | 1,250.95 mi (2,013.21 km) |
| Karlstad to Sozopol | 1,318.85 mi (2,122.49 km) |
| Karlstad to Sredets | 1,313.53 mi (2,113.92 km) |
| Karlstad to Stamboliyski | 1,281.40 mi (2,062.21 km) |
| Karlstad to Stara Zagora | 1,280.15 mi (2,060.20 km) |
| Karlstad to Svilengrad | 1,333.02 mi (2,145.30 km) |
| Karlstad to Svishtov | 1,198.16 mi (1,928.25 km) |
| Karlstad to Targovishte | 1,244.18 mi (2,002.31 km) |
| Karlstad to Teteven | 1,225.73 mi (1,972.62 km) |
| Karlstad to Troyan | 1,235.14 mi (1,987.77 km) |
| Karlstad to Tryavna | 1,249.38 mi (2,010.68 km) |
| Karlstad to Tutrakan | 1,193.71 mi (1,921.09 km) |
| Karlstad to Varna | 1,272.29 mi (2,047.56 km) |
