| Spartanburg to Karlovo | 5,362.89 mi (8,630.74 km) |
| Spartanburg to Karnobat | 5,451.48 mi (8,773.30 km) |
| Spartanburg to Kavarna | 5,470.98 mi (8,804.69 km) |
| Spartanburg to Kazanlak | 5,388.16 mi (8,671.41 km) |
| Spartanburg to Knezha | 5,298.45 mi (8,527.03 km) |
| Spartanburg to Kostinbrod | 5,290.58 mi (8,514.37 km) |
| Spartanburg to Kozloduy | 5,272.80 mi (8,485.76 km) |
| Spartanburg to Kyustendil | 5,289.85 mi (8,513.18 km) |
| Spartanburg to Levski | 5,346.38 mi (8,604.16 km) |
| Spartanburg to Lom | 5,250.98 mi (8,450.64 km) |
| Spartanburg to Lovech | 5,339.07 mi (8,592.40 km) |
| Spartanburg to Lukovit | 5,314.02 mi (8,552.09 km) |
| Spartanburg to Lyaskovets | 5,380.93 mi (8,659.77 km) |
| Spartanburg to Mezdra | 5,297.00 mi (8,524.69 km) |
| Spartanburg to Momchilgrad | 5,433.86 mi (8,744.95 km) |
