| Casselberry to Karlovo | 5,639.84 mi (9,076.44 km) |
| Casselberry to Karnobat | 5,733.76 mi (9,227.60 km) |
| Casselberry to Kavarna | 5,760.38 mi (9,270.43 km) |
| Casselberry to Kazanlak | 5,666.44 mi (9,119.26 km) |
| Casselberry to Knezha | 5,577.89 mi (8,976.74 km) |
| Casselberry to Kostinbrod | 5,564.52 mi (8,955.24 km) |
| Casselberry to Kozloduy | 5,552.82 mi (8,936.40 km) |
| Casselberry to Kyustendil | 5,559.78 mi (8,947.61 km) |
| Casselberry to Levski | 5,627.67 mi (9,056.86 km) |
| Casselberry to Lom | 5,530.05 mi (8,899.76 km) |
| Casselberry to Lovech | 5,618.22 mi (9,041.65 km) |
| Casselberry to Lukovit | 5,592.17 mi (8,999.73 km) |
| Casselberry to Lyaskovets | 5,662.34 mi (9,112.66 km) |
| Casselberry to Mezdra | 5,573.78 mi (8,970.13 km) |
| Casselberry to Momchilgrad | 5,706.85 mi (9,184.28 km) |
