| Madrid to Karlovo | 1,475.62 mi (2,374.79 km) |
| Madrid to Karnobat | 1,585.97 mi (2,552.37 km) |
| Madrid to Kavarna | 1,649.73 mi (2,654.99 km) |
| Madrid to Kazanlak | 1,505.82 mi (2,423.38 km) |
| Madrid to Knezha | 1,436.63 mi (2,312.04 km) |
| Madrid to Kostinbrod | 1,394.38 mi (2,244.04 km) |
| Madrid to Kozloduy | 1,418.93 mi (2,283.55 km) |
| Madrid to Kyustendil | 1,369.15 mi (2,203.44 km) |
| Madrid to Levski | 1,489.55 mi (2,397.20 km) |
| Madrid to Lom | 1,394.22 mi (2,243.78 km) |
| Madrid to Lovech | 1,469.25 mi (2,364.54 km) |
| Madrid to Lukovit | 1,441.36 mi (2,319.65 km) |
| Madrid to Lyaskovets | 1,519.72 mi (2,445.75 km) |
| Madrid to Mezdra | 1,417.97 mi (2,282.00 km) |
| Madrid to Momchilgrad | 1,513.81 mi (2,436.24 km) |
