| Union City to Karlovo | 6,513.27 mi (10,482.09 km) |
| Union City to Karnobat | 6,560.61 mi (10,558.28 km) |
| Union City to Kavarna | 6,537.35 mi (10,520.85 km) |
| Union City to Kazanlak | 6,527.94 mi (10,505.71 km) |
| Union City to Knezha | 6,444.07 mi (10,370.72 km) |
| Union City to Kostinbrod | 6,466.73 mi (10,407.20 km) |
| Union City to Kozloduy | 6,418.75 mi (10,329.99 km) |
| Union City to Kyustendil | 6,487.16 mi (10,440.08 km) |
| Union City to Levski | 6,475.35 mi (10,421.08 km) |
| Union City to Lom | 6,405.04 mi (10,307.91 km) |
| Union City to Lovech | 6,480.73 mi (10,429.73 km) |
| Union City to Lukovit | 6,464.51 mi (10,403.62 km) |
| Union City to Lyaskovets | 6,504.56 mi (10,468.08 km) |
| Union City to Mezdra | 6,457.15 mi (10,391.79 km) |
| Union City to Momchilgrad | 6,595.96 mi (10,615.17 km) |
