| Porto to Karlovo | 1,710.92 mi (2,753.46 km) |
| Porto to Karnobat | 1,820.41 mi (2,929.67 km) |
| Porto to Kavarna | 1,879.61 mi (3,024.94 km) |
| Porto to Kazanlak | 1,741.01 mi (2,801.89 km) |
| Porto to Knezha | 1,667.52 mi (2,683.61 km) |
| Porto to Kostinbrod | 1,629.33 mi (2,622.16 km) |
| Porto to Kozloduy | 1,648.25 mi (2,652.61 km) |
| Porto to Kyustendil | 1,607.15 mi (2,586.46 km) |
| Porto to Levski | 1,720.89 mi (2,769.50 km) |
| Porto to Lom | 1,623.37 mi (2,612.57 km) |
| Porto to Lovech | 1,701.99 mi (2,739.08 km) |
| Porto to Lukovit | 1,673.91 mi (2,693.90 km) |
| Porto to Lyaskovets | 1,752.30 mi (2,820.05 km) |
| Porto to Mezdra | 1,650.93 mi (2,656.91 km) |
| Porto to Momchilgrad | 1,754.20 mi (2,823.12 km) |
