| Sumter to Karlovo | 5,347.53 mi (8,606.02 km) |
| Sumter to Karnobat | 5,437.97 mi (8,751.57 km) |
| Sumter to Kavarna | 5,459.91 mi (8,786.87 km) |
| Sumter to Kazanlak | 5,373.27 mi (8,647.44 km) |
| Sumter to Knezha | 5,283.86 mi (8,503.56 km) |
| Sumter to Kostinbrod | 5,274.17 mi (8,487.95 km) |
| Sumter to Kozloduy | 5,258.39 mi (8,462.56 km) |
| Sumter to Kyustendil | 5,272.12 mi (8,484.66 km) |
| Sumter to Levski | 5,332.45 mi (8,581.75 km) |
| Sumter to Lom | 5,236.24 mi (8,426.91 km) |
| Sumter to Lovech | 5,324.42 mi (8,568.83 km) |
| Sumter to Lukovit | 5,299.02 mi (8,527.94 km) |
| Sumter to Lyaskovets | 5,367.07 mi (8,637.47 km) |
| Sumter to Mezdra | 5,281.53 mi (8,499.80 km) |
| Sumter to Momchilgrad | 5,417.25 mi (8,718.22 km) |
