| Sarpsborg to Karlovo | 1,289.33 mi (2,074.97 km) |
| Sarpsborg to Karnobat | 1,334.28 mi (2,147.32 km) |
| Sarpsborg to Kavarna | 1,314.94 mi (2,116.20 km) |
| Sarpsborg to Kazanlak | 1,302.62 mi (2,096.36 km) |
| Sarpsborg to Knezha | 1,220.74 mi (1,964.59 km) |
| Sarpsborg to Kostinbrod | 1,248.97 mi (2,010.03 km) |
| Sarpsborg to Kozloduy | 1,196.02 mi (1,924.80 km) |
| Sarpsborg to Kyustendil | 1,274.62 mi (2,051.31 km) |
| Sarpsborg to Levski | 1,249.68 mi (2,011.17 km) |
| Sarpsborg to Lom | 1,184.16 mi (1,905.72 km) |
| Sarpsborg to Lovech | 1,256.22 mi (2,021.70 km) |
| Sarpsborg to Lukovit | 1,241.52 mi (1,998.03 km) |
| Sarpsborg to Lyaskovets | 1,278.36 mi (2,057.33 km) |
| Sarpsborg to Mezdra | 1,236.07 mi (1,989.27 km) |
| Sarpsborg to Momchilgrad | 1,372.16 mi (2,208.28 km) |
