| Quattro Castella to Karlovo | 729.12 mi (1,173.41 km) |
| Quattro Castella to Karnobat | 835.93 mi (1,345.31 km) |
| Quattro Castella to Kavarna | 889.56 mi (1,431.62 km) |
| Quattro Castella to Kazanlak | 758.64 mi (1,220.91 km) |
| Quattro Castella to Knezha | 679.72 mi (1,093.90 km) |
| Quattro Castella to Kostinbrod | 648.16 mi (1,043.12 km) |
| Quattro Castella to Kozloduy | 658.94 mi (1,060.45 km) |
| Quattro Castella to Kyustendil | 633.16 mi (1,018.98 km) |
| Quattro Castella to Levski | 733.17 mi (1,179.93 km) |
| Quattro Castella to Lom | 634.07 mi (1,020.44 km) |
| Quattro Castella to Lovech | 716.22 mi (1,152.65 km) |
| Quattro Castella to Lukovit | 688.18 mi (1,107.52 km) |
| Quattro Castella to Lyaskovets | 765.85 mi (1,232.51 km) |
| Quattro Castella to Mezdra | 666.07 mi (1,071.94 km) |
| Quattro Castella to Momchilgrad | 782.95 mi (1,260.04 km) |
