| Portimao to Karlovo | 1,795.95 mi (2,890.31 km) |
| Portimao to Karnobat | 1,906.56 mi (3,068.31 km) |
| Portimao to Kavarna | 1,974.46 mi (3,177.59 km) |
| Portimao to Kazanlak | 1,826.06 mi (2,938.77 km) |
| Portimao to Knezha | 1,761.58 mi (2,834.99 km) |
| Portimao to Kostinbrod | 1,715.62 mi (2,761.02 km) |
| Portimao to Kozloduy | 1,745.37 mi (2,808.90 km) |
| Portimao to Kyustendil | 1,687.16 mi (2,715.23 km) |
| Portimao to Levski | 1,813.77 mi (2,918.98 km) |
| Portimao to Lom | 1,720.94 mi (2,769.58 km) |
| Portimao to Lovech | 1,792.26 mi (2,884.37 km) |
| Portimao to Lukovit | 1,764.72 mi (2,840.05 km) |
| Portimao to Lyaskovets | 1,842.59 mi (2,965.36 km) |
| Portimao to Mezdra | 1,741.07 mi (2,801.98 km) |
| Portimao to Momchilgrad | 1,827.76 mi (2,941.49 km) |
