| Fountain Valley to Karlovo | 6,659.33 mi (10,717.15 km) |
| Fountain Valley to Karnobat | 6,714.61 mi (10,806.11 km) |
| Fountain Valley to Kavarna | 6,698.20 mi (10,779.71 km) |
| Fountain Valley to Kazanlak | 6,676.10 mi (10,744.14 km) |
| Fountain Valley to Knezha | 6,589.80 mi (10,605.25 km) |
| Fountain Valley to Kostinbrod | 6,607.48 mi (10,633.71 km) |
| Fountain Valley to Kozloduy | 6,564.00 mi (10,563.74 km) |
| Fountain Valley to Kyustendil | 6,624.48 mi (10,661.06 km) |
| Fountain Valley to Levski | 6,624.50 mi (10,661.10 km) |
| Fountain Valley to Lom | 6,548.64 mi (10,539.01 km) |
| Fountain Valley to Lovech | 6,627.77 mi (10,666.36 km) |
| Fountain Valley to Lukovit | 6,609.73 mi (10,637.34 km) |
| Fountain Valley to Lyaskovets | 6,655.12 mi (10,710.39 km) |
| Fountain Valley to Mezdra | 6,600.56 mi (10,622.57 km) |
| Fountain Valley to Momchilgrad | 6,741.34 mi (10,849.14 km) |
