| Castelletto sopra Ticino to Karlovo | 827.46 mi (1,331.67 km) |
| Castelletto sopra Ticino to Karnobat | 931.70 mi (1,499.42 km) |
| Castelletto sopra Ticino to Kavarna | 979.75 mi (1,576.76 km) |
| Castelletto sopra Ticino to Kazanlak | 856.37 mi (1,378.20 km) |
| Castelletto sopra Ticino to Knezha | 773.95 mi (1,245.56 km) |
| Castelletto sopra Ticino to Kostinbrod | 747.65 mi (1,203.23 km) |
| Castelletto sopra Ticino to Kozloduy | 751.70 mi (1,209.75 km) |
| Castelletto sopra Ticino to Kyustendil | 736.32 mi (1,185.00 km) |
| Castelletto sopra Ticino to Levski | 827.04 mi (1,330.99 km) |
| Castelletto sopra Ticino to Lom | 727.10 mi (1,170.15 km) |
| Castelletto sopra Ticino to Lovech | 811.94 mi (1,306.69 km) |
| Castelletto sopra Ticino to Lukovit | 784.17 mi (1,262.01 km) |
| Castelletto sopra Ticino to Lyaskovets | 860.59 mi (1,384.99 km) |
| Castelletto sopra Ticino to Mezdra | 762.95 mi (1,227.85 km) |
| Castelletto sopra Ticino to Momchilgrad | 885.77 mi (1,425.51 km) |
