| Upton to Karlovo | 1,474.19 mi (2,372.49 km) |
| Upton to Karnobat | 1,560.16 mi (2,510.83 km) |
| Upton to Kavarna | 1,580.08 mi (2,542.90 km) |
| Upton to Kazanlak | 1,498.55 mi (2,411.68 km) |
| Upton to Knezha | 1,408.47 mi (2,266.72 km) |
| Upton to Kostinbrod | 1,404.79 mi (2,260.79 km) |
| Upton to Kozloduy | 1,382.61 mi (2,225.09 km) |
| Upton to Kyustendil | 1,408.61 mi (2,266.93 km) |
| Upton to Levski | 1,455.48 mi (2,342.37 km) |
| Upton to Lom | 1,361.37 mi (2,190.92 km) |
| Upton to Lovech | 1,449.12 mi (2,332.14 km) |
| Upton to Lukovit | 1,424.73 mi (2,292.89 km) |
| Upton to Lyaskovets | 1,489.94 mi (2,397.83 km) |
| Upton to Mezdra | 1,408.72 mi (2,267.12 km) |
| Upton to Momchilgrad | 1,547.97 mi (2,491.22 km) |
