| Portalegre to Karlovo | 1,686.12 mi (2,713.54 km) |
| Portalegre to Karnobat | 1,796.53 mi (2,891.23 km) |
| Portalegre to Kavarna | 1,860.68 mi (2,994.48 km) |
| Portalegre to Kazanlak | 1,716.31 mi (2,762.13 km) |
| Portalegre to Knezha | 1,647.56 mi (2,651.50 km) |
| Portalegre to Kostinbrod | 1,604.95 mi (2,582.92 km) |
| Portalegre to Kozloduy | 1,629.95 mi (2,623.15 km) |
| Portalegre to Kyustendil | 1,579.27 mi (2,541.60 km) |
| Portalegre to Levski | 1,700.44 mi (2,736.59 km) |
| Portalegre to Lom | 1,605.24 mi (2,583.39 km) |
| Portalegre to Lovech | 1,680.04 mi (2,703.76 km) |
| Portalegre to Lukovit | 1,652.17 mi (2,658.91 km) |
| Portalegre to Lyaskovets | 1,730.50 mi (2,784.97 km) |
| Portalegre to Mezdra | 1,628.75 mi (2,621.21 km) |
| Portalegre to Momchilgrad | 1,723.32 mi (2,773.42 km) |
