| Fredrikstad to Smolyan | 1,353.73 mi (2,178.61 km) |
| Fredrikstad to Sofia | 1,256.58 mi (2,022.27 km) |
| Fredrikstad to Sopot | 1,286.29 mi (2,070.08 km) |
| Fredrikstad to Sozopol | 1,362.66 mi (2,192.99 km) |
| Fredrikstad to Sredets | 1,355.80 mi (2,181.95 km) |
| Fredrikstad to Stamboliyski | 1,315.22 mi (2,116.64 km) |
| Fredrikstad to Stara Zagora | 1,317.95 mi (2,121.03 km) |
| Fredrikstad to Svilengrad | 1,371.41 mi (2,207.07 km) |
| Fredrikstad to Svishtov | 1,237.06 mi (1,990.86 km) |
| Fredrikstad to Targovishte | 1,286.21 mi (2,069.96 km) |
| Fredrikstad to Teteven | 1,259.93 mi (2,027.67 km) |
| Fredrikstad to Troyan | 1,270.75 mi (2,045.08 km) |
| Fredrikstad to Tryavna | 1,287.44 mi (2,071.93 km) |
| Fredrikstad to Tutrakan | 1,237.34 mi (1,991.30 km) |
| Fredrikstad to Varna | 1,318.13 mi (2,121.33 km) |
